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comet in HIb 2009/04/05

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  • ruanjiangao
    Hi all, Is this a know comet? (0,0)Upper Left 20090405_180901_s4h1B.fts (401,70) 20090405_184901_s4h1B.fts (402,71) 20090405_192901_s4h1B.fts (403,71)
    Message 1 of 24 , Apr 7, 2009
      Hi all,
      Is this a know comet?

      (0,0)Upper Left

      20090405_180901_s4h1B.fts (401,70)
      20090405_184901_s4h1B.fts (402,71)
      20090405_192901_s4h1B.fts (403,71)
      20090405_200901_s4h1B.fts (404,72)
      20090405_212923_s4h1B.fts (406,75)
      20090405_220901_s4h1B.fts (407,75)
      20090405_224901_s4h1B.fts (407,75)
      20090405_232901_s4h1B.fts (409,76)

      Regards~
      Jiangao Ruan
    • Alan Watson
      Gidday Jiangao, Well done, a good find in Hib images. I suspect that this could be C/2008 T2 - Cardinal. My star chart alignment is not working correctly. I
      Message 2 of 24 , Apr 8, 2009
        Gidday Jiangao,
        Well done, a good find in Hib images.
        I suspect that this could be C/2008 T2 - Cardinal.
        My star chart alignment is not working correctly. 
        I need a kind sole to post an update to the Stereo A and b orbital elements.
         
        kind regards, Alan.
         
         
        ----- Original Message -----
        Sent: Wednesday, April 08, 2009 3:02 PM
        Subject: [stereohunter] comet in HIb 2009/04/05

        Hi all,
        Is this a know comet?

        (0,0)Upper Left

        20090405_180901_ s4h1B.fts (401,70)
        20090405_184901_ s4h1B.fts (402,71)
        20090405_192901_ s4h1B.fts (403,71)
        20090405_200901_ s4h1B.fts (404,72)
        20090405_212923_ s4h1B.fts (406,75)
        20090405_220901_ s4h1B.fts (407,75)
        20090405_224901_ s4h1B.fts (407,75)
        20090405_232901_ s4h1B.fts (409,76)

        Regards~
        Jiangao Ruan

      • Ian Musgrave & Peta O'Donohue
        G Day All ... Sure here they are: ******************************************************************************* Ephemeris / WWW_USER Wed Apr 8 03:15:37 2009
        Message 3 of 24 , Apr 8, 2009
          G'Day All

          At 07:25 PM 8/04/2009, you wrote:
          >Gidday Jiangao,
          >Well done, a good find in Hib images.
          >I suspect that this could be C/2008 T2 - Cardinal.
          >My star chart alignment is not working correctly.
          >I need a kind sole to post an update to the Stereo A and b orbital elements.

          Sure here they are:

          *******************************************************************************
          Ephemeris / WWW_USER Wed Apr 8 03:15:37 2009 Pasadena, USA / Horizons
          *******************************************************************************
          Target body name: STEREO-A Spacecraft (-234) {source: SPK_STATES_13}
          Center body name: Earth (399) {source: DE405}
          Center-site name: BODY CENTER
          *******************************************************************************
          Start time : A.D. 2009-Apr-08 00:00:00.0000 CT
          Stop time : A.D. 2009-May-08 00:00:00.0000 CT
          Step-size : 1440 minutes
          *******************************************************************************
          Center geodetic : .000000000,.000000000,.00000000 {E-lon(deg),Lat(deg),Alt(km)}
          Center cylindric: .000000000,.000000000,.00000000 {E-lon(deg),Dxy(km),Dz(km)}
          Center radii : 6378.1 x 6378.1 x 6356.8 km {Equator, meridian, pole}
          System GM : 8.8876923901135099E-10 AU^3/d^2
          Output units : AU-D, deg, Julian day number (Tp)
          Output format : 10
          Reference frame : ICRF/J2000.0
          Output type : GEOMETRIC osculating elements
          Coordinate systm: Ecliptic and Mean Equinox of Reference Epoch
          *******************************************************************************
          JDCT
          EC QR IN
          OM W Tp
          N MA TA
          A AD PR
          *******************************************************************************
          $$SOE
          2454929.500000000 = A.D. 2009-Apr-08 00:00:00.0000 (CT)
          EC= 1.664368670482280E+05 QR= 7.636091175385753E-01 IN= 1.494558412274370E-01
          OM= 2.828690833569734E+02 W = 2.639162414413725E+01 Tp= 2454924.919507636223
          N = 1.738124439692299E+05 MA= 7.961465723514465E+05 TA= 4.772464441207900E+00
          A =-4.588008168439467E-06 AD= 6.684586454211886E+91 PR= 1.157407291666667E+95
          2454930.500000000 = A.D. 2009-Apr-09 00:00:00.0000 (CT)
          EC= 1.671038198107487E+05 QR= 7.647168291503906E-01 IN= 1.495076538704098E-01
          OM= 2.828813801820522E+02 W = 2.736920407255937E+01 Tp= 2454925.873320330400
          N = 1.744784666599386E+05 MA= 8.072559744809731E+05 TA= 4.819523506005260E+00
          A =-4.576325103409181E-06 AD= 6.684586454211886E+91 PR= 1.157407291666667E+95
          2454931.500000000 = A.D. 2009-Apr-10 00:00:00.0000 (CT)
          EC= 1.677811060211211E+05 QR= 7.658384436757316E-01 IN= 1.495975011217945E-01
          OM= 2.829034951846451E+02 W = 2.833833171324079E+01 Tp= 2454926.828733783215
          N = 1.751548194541792E+05 MA= 8.181947908410168E+05 TA= 4.864894288901400E+00
          A =-4.564536653584686E-06 AD= 6.684586454211886E+91 PR= 1.157407291666667E+95

          ************************************************************************************************************************************

          Now some one has to tell ME how to convert these to meaningful data
          for celestia, I have no klatting idea how to do this. I mean, a
          semimajor axis of -4,58E-06, what the HELL is that! And an orbital
          period of 1.157E+95 !!!! Compare these elements to the old ones for celestia.

          "STEREO-A" "Sol"
          {
          Class "spacecraft"
          Mesh "rosetta.3ds"
          Radius 0.005

          EllipticalOrbit
          {
          Epoch 2454630.5 # = 2008-Jun-13
          Period 0.943305
          SemiMajorAxis 0.961837
          Eccentricity 0.005686
          Inclination 0.125391
          AscendingNode 214.2598
          ArgOfPericenter 92.7354
          MeanAnomaly 345.2828
          }

          Albedo 0.5
          }

          None of the figures even vaguely match (except maybe argument of pericenter)

          Puzzled. Ian

          ======================================================
          Ian Musgrave Peta O'Donohue, Jack Francis, Michael James and Andrew
          Thomas Musgrave
          reynella@... http://home.mira.net/~reynella/
          Southern Sky Watch http://www.abc.net.au/science/space/default.htm
          (scroll down right hand menu)
          AstroBlogg http://astroblogger.blogspot.com/
          Contributing Editor, Sky & Space
          http://www.skyandspace.com.au/public/home.ehtml
        • Alan Watson
          Or may be this one 209P/LINEAR? ,regards alan ... From: Alan Watson To: stereohunter@yahoogroups.com Sent: Wednesday, April 08, 2009 7:55 PM Subject: Re:
          Message 4 of 24 , Apr 8, 2009
            Or may be this one 209P/LINEAR?
            ,regards alan
             
             
            ----- Original Message -----
            Sent: Wednesday, April 08, 2009 7:55 PM
            Subject: Re: [stereohunter] comet in HIb 2009/04/05

            Gidday Jiangao,
            Well done, a good find in Hib images.
            I suspect that this could be C/2008 T2 - Cardinal.
            My star chart alignment is not working correctly. 
            I need a kind sole to post an update to the Stereo A and b orbital elements.
             
            kind regards, Alan.
             
             
            ----- Original Message -----
            Sent: Wednesday, April 08, 2009 3:02 PM
            Subject: [stereohunter] comet in HIb 2009/04/05

            Hi all,
            Is this a know comet?

            (0,0)Upper Left

            20090405_180901_ s4h1B.fts (401,70)
            20090405_184901_ s4h1B.fts (402,71)
            20090405_192901_ s4h1B.fts (403,71)
            20090405_200901_ s4h1B.fts (404,72)
            20090405_212923_ s4h1B.fts (406,75)
            20090405_220901_ s4h1B.fts (407,75)
            20090405_224901_ s4h1B.fts (407,75)
            20090405_232901_ s4h1B.fts (409,76)

            Regards~
            Jiangao Ruan

          • Rainer Kracht
            ... Orbital elements of STEREO-A orbiting the earth may look a bit weird... What about STEREO-B orbiting the solar systems barycenter: 2454926.500000000 = A.D.
            Message 5 of 24 , Apr 8, 2009
              On 8 Apr 2009, at 19:57, Ian Musgrave & Peta O'Donohue wrote:

              > G'Day All
              >
              > At 07:25 PM 8/04/2009, you wrote:
              > >Gidday Jiangao,
              > >Well done, a good find in Hib images.
              > >I suspect that this could be C/2008 T2 - Cardinal.
              > >My star chart alignment is not working correctly.
              > >I need a kind sole to post an update to the Stereo A and b orbital elements.
              >
              > Sure here they are:
              >
              > *******************************************************************************
              > Ephemeris / WWW_USER Wed Apr 8 03:15:37 2009 Pasadena, USA / Horizons
              > *******************************************************************************
              > Target body name: STEREO-A Spacecraft (-234) {source: SPK_STATES_13}
              > Center body name: Earth (399) {source: DE405}
              > Center-site name: BODY CENTER
              > *******************************************************************************

              Orbital elements of STEREO-A orbiting the earth may look a bit
              weird...

              What about STEREO-B orbiting the solar systems barycenter:

              2454926.500000000 = A.D. 2009-Apr-05 00:00:00.0000 (CT)
              EC= 4.439786414420187E-02 QR= 1.005185399524089E+00 IN= 2.934952835644849E-01
              OM= 3.361030577498578E+02 W = 1.516537286278057E+02 Tp= 2454906.397232191637
              N = 9.142009439361756E-01 MA= 1.837796930629710E+01 TA= 2.007073139099005E+01
              A = 1.051886932655175E+00 AD= 1.098588465786260E+00 PR= 3.937865109283164E+02
              $$EOE
              *******************************************************************************
              Coordinate system description:

              Ecliptic and Mean Equinox of Reference Epoch

              Reference epoch: J2000.0
              xy-plane: plane of the Earth's orbit at the reference epoch
              x-axis : out along ascending node of instantaneous plane of the Earth's
              orbit and the Earth's mean equator at the reference epoch
              z-axis : perpendicular to the xy-plane in the directional (+ or -) sense
              of Earth's north pole at the reference epoch.

              Symbol meaning [1 AU=149597870.691 km, 1 day=86400.0 s]:

              JDCT Epoch Julian Date, Coordinate Time
              EC Eccentricity, e
              QR Periapsis distance, q (AU)
              IN Inclination w.r.t xy-plane, i (degrees)
              OM Longitude of Ascending Node, OMEGA, (degrees)
              W Argument of Perifocus, w (degrees)
              Tp Time of periapsis (Julian day number)
              N Mean motion, n (degrees/day)
              MA Mean anomaly, M (degrees)
              TA True anomaly, nu (degrees)
              A Semi-major axis, a (AU)
              AD Apoapsis distance (AU)
              PR Orbital period (day)

              Regards,
              Rainer
            • Ian Musgrave & Peta O'Donohue
              G Day All ... Nope and Nope, all off by some distance. 3 Juno is just below the mystery object, which itself is not far from IW Aquarii and as yet I have no
              Message 6 of 24 , Apr 8, 2009
                G'Day All

                At 08:07 PM 8/04/2009, Alan wrote:
                >Or may be this one 209P/LINEAR? AND I suspect that this could be
                >C/2008 T2 - Cardinal

                Nope and Nope, all off by some distance. 3 Juno is just below the
                mystery object, which itself is not far from IW Aquarii and as yet I
                have no match for it.

                I cannot locate a comet of anysort (well, the closest is P/2002 JN16,
                but its off by about 2 degrees, different orbit and magnitude 19 to
                boot) in the area, 446 Tisiphone is also nearby, but still around 2
                degrees from the area and magnitude 14.6, again, it's orbit is wrong.

                I'm out of ideas.

                Cheers! Ian

                ======================================================
                Ian Musgrave Peta O'Donohue, Jack Francis, Michael James and Andrew
                Thomas Musgrave
                reynella@... http://home.mira.net/~reynella/
                Southern Sky Watch http://www.abc.net.au/science/space/default.htm
                (scroll down right hand menu)
                AstroBlogg http://astroblogger.blogspot.com/
                Contributing Editor, Sky & Space
                http://www.skyandspace.com.au/public/home.ehtml
              • Alan Watson
                Thanks Ian and Rainer, for the orbital info. I just cannot get the things aligned up agian after rebuild to a new Pc. What do you think about Jaingao s Comet
                Message 7 of 24 , Apr 8, 2009
                   Thanks Ian and Rainer,
                  for the orbital info. I just cannot get the things aligned up agian after rebuild to a new Pc.
                   
                  What do you think about Jaingao's Comet detection in Hi1b?
                   
                  kind regards, Alan
                • Ian Musgrave & Peta O'Donohue
                  G Day All ... Slaps self upside of head. Yeah, that will do it every time (slinks off embarassedly) ... That makes sense. Cheers! Ian
                  Message 8 of 24 , Apr 8, 2009
                    G'Day All

                    At 09:16 PM 8/04/2009, Ranier wrote:
                    >On 8 Apr 2009, at 19:57, Ian Musgrave & Peta O'Donohue wrote:
                    >
                    > > Sure here they are:
                    > >
                    > >
                    > *******************************************************************************
                    > > Ephemeris / WWW_USER Wed Apr 8 03:15:37 2009 Pasadena, USA / Horizons
                    > >
                    > *******************************************************************************
                    > > Target body name: STEREO-A Spacecraft (-234) {source: SPK_STATES_13}
                    > > Center body name: Earth (399) {source: DE405}
                    > > Center-site name: BODY CENTER
                    > >
                    > *******************************************************************************
                    >
                    >Orbital elements of STEREO-A orbiting the earth may look a bit
                    >weird...

                    Slaps self upside of head. Yeah, that will do it every time (slinks
                    off embarassedly)


                    >What about STEREO-B orbiting the solar systems barycenter:
                    >
                    >2454926.500000000 = A.D. 2009-Apr-05 00:00:00.0000 (CT)
                    > EC= 4.439786414420187E-02 QR= 1.005185399524089E+00 IN=
                    > 2.934952835644849E-01
                    > OM= 3.361030577498578E+02 W = 1.516537286278057E+02
                    > Tp= 2454906.397232191637
                    > N = 9.142009439361756E-01 MA= 1.837796930629710E+01 TA=
                    > 2.007073139099005E+01
                    > A = 1.051886932655175E+00 AD= 1.098588465786260E+00 PR=
                    > 3.937865109283164E+02
                    >$$EOE
                    >*******************************************************************************

                    That makes sense.

                    Cheers! Ian

                    ======================================================
                    Ian Musgrave Peta O'Donohue, Jack Francis, Michael James and Andrew
                    Thomas Musgrave
                    reynella@... http://home.mira.net/~reynella/
                    Southern Sky Watch http://www.abc.net.au/science/space/default.htm
                    (scroll down right hand menu)
                    AstroBlogg http://astroblogger.blogspot.com/
                    Contributing Editor, Sky & Space
                    http://www.skyandspace.com.au/public/home.ehtml
                  • Ian Musgrave & Peta O'Donohue
                    G Day All ... I ll try and build a news Celestia file ASAP, now that Ranier has got the right orbital elements ... So far I can t find a comet or asteroid that
                    Message 9 of 24 , Apr 8, 2009
                      G'Day All

                      At 09:46 PM 8/04/2009, Alan wrote:
                      > Thanks Ian and Rainer,
                      >for the orbital info. I just cannot get the things aligned up agian
                      >after rebuild to a new Pc.

                      I'll try and build a news Celestia file ASAP, now that Ranier has got
                      the right orbital elements

                      > What do you think about Jaingao's Comet detection in Hi1b?

                      So far I can't find a comet or asteroid that matches (yeah, I've said
                      THAT before too). My comet data base is pretty up to date, but the
                      asteroid dattabase has been spotty, the MPC asteroid database doesn't
                      show anything either. (Okay, just eliminated 466 Tisophone, Mag 14.6).

                      Could be a new one?

                      Cheers! Ian

                      ======================================================
                      Ian Musgrave Peta O'Donohue, Jack Francis, Michael James and Andrew
                      Thomas Musgrave
                      reynella@... http://home.mira.net/~reynella/
                      Southern Sky Watch http://www.abc.net.au/science/space/default.htm
                      (scroll down right hand menu)
                      AstroBlogg http://astroblogger.blogspot.com/
                      Contributing Editor, Sky & Space
                      http://www.skyandspace.com.au/public/home.ehtml
                    • karlbattams
                      Hi all, Well this is a pretty bright object (~m10.5 by my crude estimate) so there aren t many comets to choose from right now. It s in the wrong part of the
                      Message 10 of 24 , Apr 8, 2009
                        Hi all,

                        Well this is a pretty bright object (~m10.5 by my crude estimate) so there aren't many comets to choose from right now. It's in the wrong part of the sky for Cardinal, and is far too bright for 209P. I think it's too close to the ecliptic (only 7-deg above) to be 2009 F6. Looking at the Horizons orbit viewer for the brightest objects that Jon Shanklin has on his site (http://www.ast.cam.ac.uk/~jds/), I can't see anything that I think would be in the HI-1B fov.

                        So, in case it's new, I have sent a handful of observations to Brian Marsden. I'll keep you posted.

                        Cheers,
                        ~~Karl

                        --- In stereohunter@yahoogroups.com, Ian Musgrave & Peta O'Donohue <reynella@...> wrote:
                        >
                        > G'Day All
                        >
                        > At 09:46 PM 8/04/2009, Alan wrote:
                        > > Thanks Ian and Rainer,
                        > >for the orbital info. I just cannot get the things aligned up agian
                        > >after rebuild to a new Pc.
                        >
                        > I'll try and build a news Celestia file ASAP, now that Ranier has got
                        > the right orbital elements
                        >
                        > > What do you think about Jaingao's Comet detection in Hi1b?
                        >
                        > So far I can't find a comet or asteroid that matches (yeah, I've said
                        > THAT before too). My comet data base is pretty up to date, but the
                        > asteroid dattabase has been spotty, the MPC asteroid database doesn't
                        > show anything either. (Okay, just eliminated 466 Tisophone, Mag 14.6).
                        >
                        > Could be a new one?
                        >
                        > Cheers! Ian
                        >
                        > ======================================================
                        > Ian Musgrave Peta O'Donohue, Jack Francis, Michael James and Andrew
                        > Thomas Musgrave
                        > reynella@... http://home.mira.net/~reynella/
                        > Southern Sky Watch http://www.abc.net.au/science/space/default.htm
                        > (scroll down right hand menu)
                        > AstroBlogg http://astroblogger.blogspot.com/
                        > Contributing Editor, Sky & Space
                        > http://www.skyandspace.com.au/public/home.ehtml
                        >
                      • Matson, Robert D.
                        Hi concur with Karl -- I find no matches to any known comet that could reasonably be this bright. It wouldn t be visible in SWAN right now since the expected
                        Message 11 of 24 , Apr 8, 2009
                          Hi concur with Karl -- I find no matches to any known comet that could
                          reasonably
                          be this bright. It wouldn't be visible in SWAN right now since the
                          expected location
                          (corrected for parallax, assuming r & d >1 a.u.) would be masked by the
                          occulting
                          region to the west of the sun. --Rob

                          -----Original Message-----
                          From: stereohunter@yahoogroups.com [mailto:stereohunter@yahoogroups.com]
                          On Behalf Of karlbattams
                          Sent: Wednesday, April 08, 2009 8:48 AM
                          To: stereohunter@yahoogroups.com
                          Subject: [stereohunter] Re: comet in HIb 2009/04/05

                          Hi all,

                          Well this is a pretty bright object (~m10.5 by my crude estimate) so
                          there aren't many comets to choose from right now. It's in the wrong
                          part of the sky for Cardinal, and is far too bright for 209P. I think
                          it's too close to the ecliptic (only 7-deg above) to be 2009 F6.
                          Looking at the Horizons orbit viewer for the brightest objects that Jon
                          Shanklin has on his site (http://www.ast.cam.ac.uk/~jds/), I can't see
                          anything that I think would be in the HI-1B fov.

                          So, in case it's new, I have sent a handful of observations to Brian
                          Marsden. I'll keep you posted.

                          Cheers,
                          ~~Karl
                        • Rainer Kracht
                          Yes, this is not a well known object. It has entered HI1B already on 2009 April 03 12:09 315,2 (0,0) upper left Cheers, Rainer
                          Message 12 of 24 , Apr 8, 2009
                            Yes, this is not a well known object.
                            It has entered HI1B already on 2009 April 03
                            12:09 315,2 (0,0) upper left

                            Cheers,
                            Rainer

                            On 8 Apr 2009, at 15:30, Matson, Robert D. wrote:

                            > Hi concur with Karl -- I find no matches to any known comet that could
                            > reasonably
                            > be this bright. It wouldn't be visible in SWAN right now since the
                            > expected location
                            > (corrected for parallax, assuming r & d >1 a.u.) would be masked by the
                            > occulting
                            > region to the west of the sun. --Rob
                            >
                            > -----Original Message-----
                            > From: stereohunter@yahoogroups.com [mailto:stereohunter@yahoogroups.com]
                            > On Behalf Of karlbattams
                            > Sent: Wednesday, April 08, 2009 8:48 AM
                            > To: stereohunter@yahoogroups.com
                            > Subject: [stereohunter] Re: comet in HIb 2009/04/05
                            >
                            > Hi all,
                            >
                            > Well this is a pretty bright object (~m10.5 by my crude estimate) so
                            > there aren't many comets to choose from right now. It's in the wrong
                            > part of the sky for Cardinal, and is far too bright for 209P. I think
                            > it's too close to the ecliptic (only 7-deg above) to be 2009 F6.
                            > Looking at the Horizons orbit viewer for the brightest objects that Jon
                            > Shanklin has on his site (http://www.ast.cam.ac.uk/~jds/), I can't see
                            > anything that I think would be in the HI-1B fov.
                            >
                            > So, in case it's new, I have sent a handful of observations to Brian
                            > Marsden. I'll keep you posted.
                            >
                            > Cheers,
                            > ~~Karl
                            >
                          • ruanjiangao
                            Hi all, Thanks all of your help~ At first I think it may be 2009 F6~ but it s perihelion is in May,and I don t know the time it enter HIb. Regards~ Jiangao
                            Message 13 of 24 , Apr 8, 2009
                              Hi all,

                              Thanks all of your help~
                              At first I think it may be 2009 F6~ but it's perihelion is in May,and I don't know the time it enter HIb.

                              Regards~
                              Jiangao Ruan
                            • Matson, Robert D.
                              Hi Jiangao, No danger of it being 2009 F6 (Yi-SWAN) -- your comet s declination is much too low for that. --Rob ... From: stereohunter@yahoogroups.com on
                              Message 14 of 24 , Apr 8, 2009
                                Hi Jiangao,

                                No danger of it being 2009 F6 (Yi-SWAN) -- your comet's declination
                                is much too low for that. --Rob

                                -----Original Message-----
                                From: stereohunter@yahoogroups.com on behalf of ruanjiangao
                                Sent: Wed 4/8/2009 9:59 PM
                                To: stereohunter@yahoogroups.com
                                Subject: [stereohunter] Re: comet in HIb 2009/04/05

                                Hi all,

                                Thanks all of your help~
                                At first I think it may be 2009 F6~ but it's perihelion is in May,and I don't know the time it enter HIb.

                                Regards~
                                Jiangao Ruan





                                ------------------------------------

                                Yahoo! Groups Links
                              • Maik Meyer
                                Hi guys, exciting times. ;) ... can anyone give a rough geocentric position in order to notify groundbased observers for confirmation? (If this hasn t been
                                Message 15 of 24 , Apr 8, 2009
                                  Hi guys,

                                  exciting times. ;)

                                  > Yes, this is not a well known object.
                                  > It has entered HI1B already on 2009 April 03
                                  > 12:09 315,2 (0,0) upper left

                                  can anyone give a rough geocentric position in order to notify groundbased
                                  observers for confirmation? (If this hasn't been done already.)

                                  I hope the object will be on the NEOCP when I return from my business travel later
                                  this afternoon.

                                  Cheers, Maik
                                  --
                                  If they give you ruled paper, write the other way. * Juan Ramon Jimenez
                                  ________________________________________________________________________
                                  maik@... http://www.comethunter.de
                                  International Comet Quarterly http://cfa-www.harvard.edu/icq/icq.html
                                  http://groups.yahoo.com/group/comets-ml
                                • Ian Musgrave & Peta O'Donohue
                                  G Day All ... And definitely not 2009 F6 ... At 5 April 2009 23:29 UT it was (very roughly) at21h 54 min 32 sec and -3 deh 58 33 . By now it is probably
                                  Message 16 of 24 , Apr 9, 2009
                                    G'Day All

                                    Maik Meyer wrote:
                                    > Hi guys,
                                    >
                                    > exciting times. ;)
                                    >
                                    >> Yes, this is not a well known object.

                                    And definitely not 2009 F6

                                    >> It has entered HI1B already on 2009 April 03
                                    >> 12:09 315,2 (0,0) upper left
                                    >
                                    > can anyone give a rough geocentric position in order to notify groundbased
                                    > observers for confirmation? (If this hasn't been done already.)

                                    At 5 April 2009 23:29 UT it was (very roughly) at21h 54 min 32 sec and -3
                                    deh 58' 33 ''. By now it is probably within 1 deg of 3 Juno.

                                    Cheers! Ian
                                    =========================================
                                    Ian Musgrave, Peta ODonohue, Jack, Mikey and Andy
                                    reynella@... http://home.mira.net/~reynella/
                                    Southern Sky Watch http://www.abc.net.au/science/space/default.htm
                                    (scroll down right hand menu)
                                    AstroBlogg http://astroblogger.blogspot.com/
                                    Sky & Space http://www.skyandspace.com.au/public/home.ehtml
                                  • Alan Watson
                                    Here is some measures from using SAO DS9 Let me know if you need some more, rgds Alan 20090403_120901_s4h1B.fts wcsa;fk5
                                    Message 17 of 24 , Apr 9, 2009
                                      Here is some measures from using SAO DS9
                                      Let me know if you need some more, rgds Alan

                                      20090403_120901_s4h1B.fts
                                      wcsa;fk5 circle(21:03:24.653,-06:24:52.01,1434.61")
                                       
                                      20090405_104901_s4h1B.fts
                                      wcsa;fk5 circle(21:06:42.195,-07:18:09.48,1434.61")
                                       
                                      20090405_184901_s4h1B.fts
                                      wcsa;fk5 circle(21:07:17.295,-07:27:33.24,1434.61")
                                       
                                      20090405_232901_s4h1B.fts
                                      wcsa;fk5 circle(21:07:32.057,-07:32:27.20,1434.61")
                                       
                                      ----- Original Message -----
                                      Sent: Thursday, April 09, 2009 7:26 PM
                                      Subject: RE: [stereohunter] Re: comet in HIb 2009/04/05

                                      G'Day All

                                      Maik Meyer wrote:
                                      > Hi guys,
                                      >
                                      > exciting times. ;)
                                      >
                                      >> Yes, this is not a well known object.

                                      And definitely not 2009 F6

                                      >> It has entered HI1B already on 2009 April 03
                                      >> 12:09 315,2 (0,0) upper left
                                      >
                                      > can anyone give a rough geocentric position in order to notify groundbased
                                      > observers for confirmation? (If this hasn't been done already.)

                                      At 5 April 2009 23:29 UT it was (very roughly) at21h 54 min 32 sec and -3
                                      deh 58' 33 ''. By now it is probably within 1 deg of 3 Juno.

                                      Cheers! Ian
                                      ============ ========= ========= ========= ==
                                      Ian Musgrave, Peta ODonohue, Jack, Mikey and Andy
                                      reynella@mira. net http://home. mira.net/ ~reynella/
                                      Southern Sky Watch http://www.abc. net.au/science/ space/default. htm
                                      (scroll down right hand menu)
                                      AstroBlogg http://astroblogger .blogspot. com/
                                      Sky & Space http://www.skyandsp ace.com.au/ public/home. ehtml

                                    • Ian Musgrave & Peta O'Donohue
                                      G Day All I ve made a diagram showing where the unknown is in H1b, and where I have extrapolated it to be as seen from Earth (Juno s location in H1b and as
                                      Message 18 of 24 , Apr 9, 2009
                                        G'Day All

                                        I've made a diagram showing where the unknown is in H1b, and where I have
                                        extrapolated it to be as seen from Earth (Juno's location in H1b and as
                                        seen from Earth is shown for comparison). The Map is set as for April 6
                                        00:00 UTC.
                                        JPG http://home.mira.net/~reynella1/astronomy/Unknown_05-04-9.jpg
                                        PDF http://home.mira.net/~reynella1/astronomy/Unknown_5-5-09.pdf

                                        Pity the Moon is nearly full.

                                        Alan Watson wrote:
                                        > Here is some measures from using SAO DS9
                                        > Let me know if you need some more, rgds Alan
                                        >
                                        > 20090403_120901_s4h1B.fts
                                        > wcsa;fk5 circle(21:03:24.653,-06:24:52.01,1434.61")
                                        > Maik Meyer wrote:

                                        > > can anyone give a rough geocentric position in order to notify
                                        > groundbased
                                        > > observers for confirmation? (If this hasn't been done already.)

                                        Cheers! Ian
                                        =========================================
                                        Ian Musgrave, Peta ODonohue, Jack, Mikey and Andy
                                        reynella@... http://home.mira.net/~reynella/
                                        Southern Sky Watch http://www.abc.net.au/science/space/default.htm
                                        (scroll down right hand menu)
                                        AstroBlogg http://astroblogger.blogspot.com/
                                        Sky & Space http://www.skyandspace.com.au/public/home.ehtml
                                      • Adam Hurcewicz
                                        I have made a nimation of 15 images started from 20090405_180901 http://img9.imageshack.us/img9/1681/hi1bcomet2009anim.gif Adam
                                        Message 19 of 24 , Apr 9, 2009
                                          I have made a nimation of 15 images started from
                                          20090405_180901

                                          http://img9.imageshack.us/img9/1681/hi1bcomet2009anim.gif


                                          Adam
                                        • Michal Kusiak
                                          Hi All, Jiangao s comet was named as C/2009 G1 (STEREO). http://www.cfa.harvard.edu/mpec/K09/K09G30.html Congratulation Jiangao on your first comet, which
                                          Message 20 of 24 , Apr 9, 2009
                                            Hi All,

                                            Jiangao's comet was named as C/2009 G1 (STEREO).
                                            http://www.cfa.harvard.edu/mpec/K09/K09G30.html

                                            Congratulation Jiangao on your first comet, which might be visible from the ground.
                                            Fantastic find!

                                            Sincerely
                                            Michal


                                            http://www.cfa.harvard.edu/mpec/K09/K09G30.html




                                            Dnia 9 kwietnia 2009 19:43 "Adam Hurcewicz" <limax7@...> napisaƂ(a):



                                            >
                                            > >
                                            >
                                            >
                                            >
                                            >
                                            >
                                            >
                                            >
                                            > I have made a nimation of 15 images started from
                                            > 20090405_180901
                                            >
                                            > http://img9.imageshack.us/img9/1681/hi1bcomet2009anim.gif
                                            >
                                            > Adam
                                            >
                                            >
                                            >
                                            >
                                            >
                                            >
                                            >
                                          • Adam Hurcewicz
                                            Updated animation from 42 images http://img22.imageshack.us/img22/4527/hi1bcomet2009anim2.gif
                                            Message 21 of 24 , Apr 9, 2009
                                            • Ian Musgrave & Peta O'Donohue
                                              G Day All ... Here s mine (Warning 1 Meg AVI) http://home.mira.net/~reynella1/astronomy/C2009G1.avi The comet is near top right, Juno is biottom Centre.
                                              Message 22 of 24 , Apr 9, 2009
                                                G'Day All

                                                Adam Hurcewicz wrote:
                                                > I have made a nimation of 15 images started from
                                                > 20090405_180901
                                                >
                                                > http://img9.imageshack.us/img9/1681/hi1bcomet2009anim.gif

                                                Here's mine (Warning 1 Meg AVI)
                                                http://home.mira.net/~reynella1/astronomy/C2009G1.avi

                                                The comet is near top right, Juno is biottom Centre.

                                                Cheers! Ian


                                                =========================================
                                                Ian Musgrave, Peta ODonohue, Jack, Mikey and Andy
                                                reynella@... http://home.mira.net/~reynella/
                                                Southern Sky Watch http://www.abc.net.au/science/space/default.htm
                                                (scroll down right hand menu)
                                                AstroBlogg http://astroblogger.blogspot.com/
                                                Sky & Space http://www.skyandspace.com.au/public/home.ehtml
                                              • Ian Musgrave & Peta O'Donohue
                                                G Day All ... I now have a printable PDF spotters map, set for astronomical twilight, http://home.mira.net/%7Ereynella1/astronomy/comet_2009G1_10-04-09.pdf and
                                                Message 23 of 24 , Apr 9, 2009
                                                  G'Day All

                                                  At 10:15 PM 9/04/2009, I wrote:
                                                  >G'Day All
                                                  >
                                                  >I've made a diagram showing where the unknown is in H1b, and where I have
                                                  >extrapolated it to be as seen from Earth (Juno's location in H1b and as
                                                  >seen from Earth is shown for comparison).

                                                  I now have a printable PDF spotters map, set for astronomical twilight,
                                                  http://home.mira.net/%7Ereynella1/astronomy/comet_2009G1_10-04-09.pdf
                                                  and a high definition map, using the new orbital elements.
                                                  http://home.mira.net/~reynella1/astronomy/2009G1_10-04-09.pdf
                                                  (Yes, I know it's labeled G2 on the high resolution map, I'll fix this later)

                                                  Cheers! Ian

                                                  ======================================================
                                                  Ian Musgrave Peta O'Donohue, Jack Francis, Michael James and Andrew
                                                  Thomas Musgrave
                                                  reynella@... http://home.mira.net/~reynella/
                                                  Southern Sky Watch http://www.abc.net.au/science/space/default.htm
                                                  (scroll down right hand menu)
                                                  AstroBlogg http://astroblogger.blogspot.com/
                                                  Contributing Editor, Sky & Space
                                                  http://www.skyandspace.com.au/public/home.ehtml
                                                • Ian Musgrave & Peta O'Donohue
                                                  G Day All Here is a celestia file for the STEREO space craft, using recent elements: ==============STEREO.ssc=============================== STEREO-A Sol {
                                                  Message 24 of 24 , Apr 9, 2009
                                                    G'Day All

                                                    Here is a celestia file for the STEREO space craft, using recent elements:
                                                    ==============STEREO.ssc===============================
                                                    "STEREO-A" "Sol"
                                                    {
                                                    Class "spacecraft"
                                                    Mesh "rosetta.3ds"
                                                    Radius 0.005

                                                    EllipticalOrbit
                                                    {
                                                    Epoch 2454926.500000000 # = A.D. 2009-Apr-05 00:00:00.0000
                                                    Period 0.93326171
                                                    SemiMajorAxis 0.95539896
                                                    Eccentricity 0.00956256
                                                    Inclination 0.12547128
                                                    AscendingNode 214.52049481
                                                    ArgOfPericenter 127.85192
                                                    MeanAnomaly 259.41452171
                                                    }

                                                    Albedo 0.5
                                                    }

                                                    "STEREO-B" "Sol"
                                                    {
                                                    Class "spacecraft"
                                                    Mesh "rosetta.3ds"
                                                    Radius 0.005

                                                    EllipticalOrbit
                                                    {
                                                    Epoch 2454926.500000000 #= A.D. 2009-Apr-05 00:00:00.0000
                                                    Period 1.078152
                                                    SemiMajorAxis 1.051887
                                                    Eccentricity 0.004440
                                                    Inclination 0.293495
                                                    AscendingNode 336.1030577498578
                                                    ArgOfPericenter 151.6537286278057
                                                    MeanAnomaly 18.37796930629710
                                                    }

                                                    Albedo 0.5
                                                    }
                                                    =========================================================================

                                                    Cheers! Ian

                                                    ======================================================
                                                    Ian Musgrave Peta O'Donohue, Jack Francis, Michael James and Andrew
                                                    Thomas Musgrave
                                                    reynella@... http://home.mira.net/~reynella/
                                                    Southern Sky Watch http://www.abc.net.au/science/space/default.htm
                                                    (scroll down right hand menu)
                                                    AstroBlogg http://astroblogger.blogspot.com/
                                                    Contributing Editor, Sky & Space
                                                    http://www.skyandspace.com.au/public/home.ehtml
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