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Comet in HI1b - ??

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  • algwat
    A non group, non kreutz comet is moving in HI1b. see positions. I have not been able to relate it to a known comet as yet. so reporting it here Also Masanori
    Message 1 of 15 , Dec 11, 2008
      A non group, non kreutz comet is moving in HI1b. see positions.
      I have not been able to relate it to a known comet as yet. so
      reporting it here

      Also Masanori Uchina recent C3 also is detectable in this sequence.
      kind reagrds, Alan

      1 H1b:20081208_164901_s4h1B 42.1900 484 994 26
      2 H1b:20081208_160901_s4h1B 39.3192 482 995 25
      3 H1b:20081208_152901_s4h1B 36.8917 480 997 24
      4 H1b:20081208_132901_s4h1B 39.9875 473 1000 21
      5 H1b:20081208_124901_s4h1B 25.7682 471 1002 20
      6 H1b:20081208_120901_s4h1B 37.9868 468 1003 19
      7 H1b:20081208_112901_s4h1B 35.3129 466 1004 18
      8 H1b:20081208_104901_s4h1B 45.7821 463 1005 17
      9 H1b:20081208_100901_s4h1B 41.4729 461 1006 16
      10 H1b:20081208_092901_s4h1B 38.2884 458 1008 15
      11 H1b:20081208_084901_s4h1B 35.9026 456 1009 14
      12 H1b:20081208_080901_s4h1B 32.2335 454 1010 13
      13 H1b:20081208_072901_s4h1B 44.4522 451 1011 12
      14 H1b:20081208_064901_s4h1B 38.5876 449 1012 11
      15 H1b:20081208_060901_s4h1B 30.1662 447 1013 10
      16 H1b:20081208_052901_s4h1B 36.8103 444 1015 9
    • karlbattams
      Dear all, The non-group object reported by Alan is definitely real, and definitely non-group. But is it known or not...?! Lulin should be heading into that
      Message 2 of 15 , Dec 11, 2008
        Dear all,

        The non-group object reported by Alan is definitely real, and
        definitely non-group. But is it known or not...?! Lulin should be
        heading into that part of the sky some time very soon but I would have
        expected a lower apparent inclination. Thoughts?

        ~~Karl

        --- In stereohunter@yahoogroups.com, "algwat" <awat4309@...> wrote:
        >
        > A non group, non kreutz comet is moving in HI1b. see positions.
        > I have not been able to relate it to a known comet as yet. so
        > reporting it here
        >
        > Also Masanori Uchina recent C3 also is detectable in this sequence.
        > kind reagrds, Alan
        >
        > 1 H1b:20081208_164901_s4h1B 42.1900 484 994 26
        > 2 H1b:20081208_160901_s4h1B 39.3192 482 995 25
        > 3 H1b:20081208_152901_s4h1B 36.8917 480 997 24
        > 4 H1b:20081208_132901_s4h1B 39.9875 473 1000 21
        > 5 H1b:20081208_124901_s4h1B 25.7682 471 1002 20
        > 6 H1b:20081208_120901_s4h1B 37.9868 468 1003 19
        > 7 H1b:20081208_112901_s4h1B 35.3129 466 1004 18
        > 8 H1b:20081208_104901_s4h1B 45.7821 463 1005 17
        > 9 H1b:20081208_100901_s4h1B 41.4729 461 1006 16
        > 10 H1b:20081208_092901_s4h1B 38.2884 458 1008 15
        > 11 H1b:20081208_084901_s4h1B 35.9026 456 1009 14
        > 12 H1b:20081208_080901_s4h1B 32.2335 454 1010 13
        > 13 H1b:20081208_072901_s4h1B 44.4522 451 1011 12
        > 14 H1b:20081208_064901_s4h1B 38.5876 449 1012 11
        > 15 H1b:20081208_060901_s4h1B 30.1662 447 1013 10
        > 16 H1b:20081208_052901_s4h1B 36.8103 444 1015 9
        >
      • Rainer Kracht
        Hi, I have confirmed that it s not one of the currently bright comets: not C/2008 A1 McNaught not C/2006 W3 Christensen not C/2006 OF2 Broughton and not 29P
        Message 3 of 15 , Dec 11, 2008
          Hi,

          I have confirmed that it's not one of the currently bright comets:
          not C/2008 A1 McNaught
          not C/2006 W3 Christensen
          not C/2006 OF2 Broughton
          and not 29P SW-1
          Lulin is at 14h 50m, -15.5d as seen from HI1B
          and the center of HI1B is at 13h 08m, -7.6d,
          Lulin doesn't fit either.

          So, it seems Alan's comet is something exiting!

          Rainer


          On 11 Dec 2008, at 20:41, karlbattams wrote:

          > Dear all,
          >
          > The non-group object reported by Alan is definitely real, and
          > definitely non-group. But is it known or not...?! Lulin should be
          > heading into that part of the sky some time very soon but I would have
          > expected a lower apparent inclination. Thoughts?
          >
          > ~~Karl
          >
          > --- In stereohunter@yahoogroups.com, "algwat" <awat4309@...> wrote:
          > >
          > > A non group, non kreutz comet is moving in HI1b. see positions.
          > > I have not been able to relate it to a known comet as yet. so
          > > reporting it here
          > >
          > > Also Masanori Uchina recent C3 also is detectable in this sequence.
          > > kind reagrds, Alan
          > >
          > > 1 H1b:20081208_164901_s4h1B 42.1900 484 994 26
          > > 2 H1b:20081208_160901_s4h1B 39.3192 482 995 25
          > > 3 H1b:20081208_152901_s4h1B 36.8917 480 997 24
          > > 4 H1b:20081208_132901_s4h1B 39.9875 473 1000 21
          > > 5 H1b:20081208_124901_s4h1B 25.7682 471 1002 20
          > > 6 H1b:20081208_120901_s4h1B 37.9868 468 1003 19
          > > 7 H1b:20081208_112901_s4h1B 35.3129 466 1004 18
          > > 8 H1b:20081208_104901_s4h1B 45.7821 463 1005 17
          > > 9 H1b:20081208_100901_s4h1B 41.4729 461 1006 16
          > > 10 H1b:20081208_092901_s4h1B 38.2884 458 1008 15
          > > 11 H1b:20081208_084901_s4h1B 35.9026 456 1009 14
          > > 12 H1b:20081208_080901_s4h1B 32.2335 454 1010 13
          > > 13 H1b:20081208_072901_s4h1B 44.4522 451 1011 12
          > > 14 H1b:20081208_064901_s4h1B 38.5876 449 1012 11
          > > 15 H1b:20081208_060901_s4h1B 30.1662 447 1013 10
          > > 16 H1b:20081208_052901_s4h1B 36.8103 444 1015 9
          > >
          >
          >
          >
        • Rainer Kracht
          ... Congrats Alan!! This one seems to be new. I have measured seven positions 20081208 06:09 - 22:49 UTC with Astrometrica . The magnitude is close to mag 10.
          Message 4 of 15 , Dec 11, 2008
            On 11 Dec 2008, at 19:55, algwat wrote:

            > A non group, non kreutz comet is moving in HI1b. see positions.
            > I have not been able to relate it to a known comet as yet. so
            > reporting it here
            >
            Congrats Alan!!

            This one seems to be new.

            I have measured seven positions 20081208 06:09 - 22:49 UTC
            with Astrometrica . The magnitude is close to mag 10.
            Several orbits are possible.

            Smallest RMS residuals are 4.8" with
            T = 2008 December 20.05 or 20.06
            e = 1
            q = 0.5172
            peri = 340.46
            node = 102.48 or 102.47
            incl = 9.28 or 9.27

            But most often the orbit converges to (RMS = 6.8")
            T = 2008 November 30.47
            e = 1
            q = 0.2681
            peri = 261.01
            node = 140.74
            incl = 102.19

            other solutions are possible.

            Rainer
          • Steve E. Farmer Jr.
            Congrats Alan! Would this comet be visible from ground-based scopes? Steve ... From: stereohunter@yahoogroups.com [mailto:stereohunter@yahoogroups.com]On
            Message 5 of 15 , Dec 11, 2008
            • algwat
              Gidday Steve, not sure, I really hope so, it looks to be outbound to me. So may past 20 degress from the sun At work so cannot be be more interactive. Thanks
              Message 6 of 15 , Dec 11, 2008
                Gidday Steve,
                not sure, I really hope so, it looks to be outbound to me. So may
                past 20 degress from the sun
                At work so cannot be be more interactive.
                Thanks Rainer for the the work and feed back.

                kind regards, Alan.


                --- In stereohunter@yahoogroups.com, "Steve E. Farmer Jr."
                <sefarmer@...> wrote:
                >
                > Congrats Alan! Would this comet be visible from ground-based
                scopes?
                >
                >
                > Steve
                >
                >
                >
                > -----Original Message-----
                > From: stereohunter@yahoogroups.com
                [mailto:stereohunter@yahoogroups.com]On
                > Behalf Of Rainer Kracht
                > Sent: Thursday, December 11, 2008 5:34 PM
                > To: stereohunter@yahoogroups.com
                > Subject: Re: [stereohunter] Comet in HI1b - ??
                >
                > On 11 Dec 2008, at 19:55, algwat wrote:
                >
                > > A non group, non kreutz comet is moving in HI1b. see positions.
                > > I have not been able to relate it to a known comet as yet. so
                > > reporting it here
                > >
                > Congrats Alan!!
                >
                > This one seems to be new.
                >
                > I have measured seven positions 20081208 06:09 - 22:49 UTC
                > with Astrometrica . The magnitude is close to mag 10.
                > Several orbits are possible.
                >
                > Smallest RMS residuals are 4.8" with
                > T = 2008 December 20.05 or 20.06
                > e = 1
                > q = 0.5172
                > peri = 340.46
                > node = 102.48 or 102.47
                > incl = 9.28 or 9.27
                >
                > But most often the orbit converges to (RMS = 6.8")
                > T = 2008 November 30.47
                > e = 1
                > q = 0.2681
                > peri = 261.01
                > node = 140.74
                > incl = 102.19
                >
                > other solutions are possible.
                >
                > Rainer
                >
              • Steve E. Farmer Jr.
                Hi Alan, If it’s within my view I’ll be glad to give it a try. Maybe with a few more positions an ephemeris can be generated. Steve ... From:
                Message 7 of 15 , Dec 11, 2008
                • karlbattams
                  Hi all, I ll try to measure a few positions tomorrow and get them to Brian. It looks like the comet will be in HI1 for quite a while so I think there ll be
                  Message 8 of 15 , Dec 11, 2008
                    Hi all,

                    I'll try to measure a few positions tomorrow and get them to Brian.
                    It looks like the comet will be in HI1 for quite a while so I think
                    there'll be plenty of data to come.

                    Many congrats, Alan -- I have been waiting a long time for SECCHI's
                    first non-Kreutz discovery!

                    ~~Karl

                    --- In stereohunter@yahoogroups.com, "Steve E. Farmer Jr."
                    <sefarmer@...> wrote:
                    >
                    > Hi Alan,
                    >
                    > If it�s within my view I�ll be glad to give it a try. Maybe with a
                    few more
                    > positions an ephemeris can be generated.
                    >
                    >
                    > Steve
                    >
                    >
                    >
                    > -----Original Message-----
                    > From: stereohunter@yahoogroups.com
                    [mailto:stereohunter@yahoogroups.com]On
                    > Behalf Of algwat
                    > Sent: Thursday, December 11, 2008 6:40 PM
                    > To: stereohunter@yahoogroups.com
                    > Subject: [stereohunter] Re: Comet in HI1b - ??
                    >
                    > Gidday Steve,
                    > not sure, I really hope so, it looks to be outbound to me. So may
                    > past 20 degress from the sun
                    > At work so cannot be be more interactive.
                    > Thanks Rainer for the the work and feed back.
                    >
                    > kind regards, Alan.
                    >
                    > --- In stereohunter@yahoogroups.com
                    <mailto:stereohunter%40yahoogroups.com>
                    > , "Steve E. Farmer Jr."
                    > <sefarmer@> wrote:
                    > >
                    > > Congrats Alan! Would this comet be visible from ground-based
                    > scopes?
                    > >
                    > >
                    > > Steve
                    > >
                    > >
                    > >
                    > > -----Original Message-----
                    > > From: stereohunter@yahoogroups.com
                    <mailto:stereohunter%40yahoogroups.com>
                    > [mailto: stereohunter@yahoogroups.com
                    > <mailto:stereohunter%40yahoogroups.com> ]On
                    > > Behalf Of Rainer Kracht
                    > > Sent: Thursday, December 11, 2008 5:34 PM
                    > > To: stereohunter@yahoogroups.com
                    <mailto:stereohunter%40yahoogroups.com>
                    > > Subject: Re: [stereohunter] Comet in HI1b - ??
                    > >
                    > > On 11 Dec 2008, at 19:55, algwat wrote:
                    > >
                    > > > A non group, non kreutz comet is moving in HI1b. see positions.
                    > > > I have not been able to relate it to a known comet as yet. so
                    > > > reporting it here
                    > > >
                    > > Congrats Alan!!
                    > >
                    > > This one seems to be new.
                    > >
                    > > I have measured seven positions 20081208 06:09 - 22:49 UTC
                    > > with Astrometrica . The magnitude is close to mag 10.
                    > > Several orbits are possible.
                    > >
                    > > Smallest RMS residuals are 4.8" with
                    > > T = 2008 December 20.05 or 20.06
                    > > e = 1
                    > > q = 0.5172
                    > > peri = 340.46
                    > > node = 102.48 or 102.47
                    > > incl = 9.28 or 9.27
                    > >
                    > > But most often the orbit converges to (RMS = 6.8")
                    > > T = 2008 November 30.47
                    > > e = 1
                    > > q = 0.2681
                    > > peri = 261.01
                    > > node = 140.74
                    > > incl = 102.19
                    > >
                    > > other solutions are possible.
                    > >
                    > > Rainer
                    > >
                    >
                  • Maik Meyer
                    Rainer, are you sure that it is not P/2003 K2? ... the predicted elements for P/2003 K2 are q = 0.5339 peri = 345.92 node = 93.85 i = 10.22 The perihelion date
                    Message 9 of 15 , Dec 11, 2008
                      Rainer,

                      are you sure that it is not P/2003 K2?

                      > Several orbits are possible.
                      >
                      > Smallest RMS residuals are 4.8" with
                      > T = 2008 December 20.05 or 20.06
                      > e = 1
                      > q = 0.5172
                      > peri = 340.46
                      > node = 102.48 or 102.47
                      > incl = 9.28 or 9.27

                      the predicted elements for P/2003 K2 are

                      q = 0.5339
                      peri = 345.92
                      node = 93.85
                      i = 10.22

                      The perihelion date (or e) are uncertain, so this may well be P/2003 K2. Tahiti is
                      clouded out for me, so no remote attempt possible.

                      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
                    • algwat
                      Gidday Rainer and Maik, When I turn on the orbit path for this comet in Starry night, it crosses the FOv locations very close to the star patterns I see this
                      Message 10 of 15 , Dec 12, 2008
                        Gidday Rainer and Maik,
                        When I turn on the orbit path for this comet in Starry night, it
                        crosses the FOv locations very close to the star patterns I see this
                        comet crossing. However the comet is still showing 57 degrees to the
                        left at Dec9 in StereoB. And is possibly in the righ of HI2a about to
                        enter Hi1A also. The data was updated today from the harvard site.

                        It is probably to much of a coincidence to ignore, so I am inclined
                        to defer to this comet being P/2003 K2 at this time.

                        Kind regards, Alan

                        --- In stereohunter@yahoogroups.com, "Maik Meyer" <maik@...> wrote:
                        >
                        > Rainer,
                        >
                        > are you sure that it is not P/2003 K2?
                        >
                        > > Several orbits are possible.
                        > >
                        > > Smallest RMS residuals are 4.8" with
                        > > T = 2008 December 20.05 or 20.06
                        > > e = 1
                        > > q = 0.5172
                        > > peri = 340.46
                        > > node = 102.48 or 102.47
                        > > incl = 9.28 or 9.27
                        >
                        > the predicted elements for P/2003 K2 are
                        >
                        > q = 0.5339
                        > peri = 345.92
                        > node = 93.85
                        > i = 10.22
                        >
                        > The perihelion date (or e) are uncertain, so this may well be
                        P/2003 K2. Tahiti is
                        > clouded out for me, so no remote attempt possible.
                        >
                        > 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
                        >
                      • Maik Meyer
                        Ian, ... the orbit of P/2003 K2 is uncertain in T by maybe +/- 1 month. So, perihelion time may be in early December or late january as well. The comet has not
                        Message 11 of 15 , Dec 12, 2008
                          Ian,

                          >>When I turn on the orbit path for this comet in Starry night, it
                          >>crosses the FOv locations very close to the star patterns I see this
                          >>comet crossing. However the comet is still showing 57 degrees to the
                          >>left at Dec9 in StereoB. And is possibly in the righ of HI2a about to
                          >>enter Hi1A also. The data was updated today from the harvard site.

                          the orbit of P/2003 K2 is uncertain in T by maybe +/- 1 month. So, perihelion time
                          may be in early December or late january as well. The comet has not yet been
                          recovered after its last apparition, despite searches along its line of variation
                          (including by myself from Tahiti).

                          So, the angular elements are well fitting, only the perihelion time is off. So,
                          this is the basis for my suggestion.

                          Cheers, Maik
                          --
                          If they give you ruled paper, write the other way. * Juan Ramon Jimenez
                          ________________________________________________________________________
                          maik@... http://www.comethunter.de
                          German Comet Section http://www.fg-kometen.de
                          http://groups.yahoo.com/group/comets-ml
                        • Ian Musgrave & Peta O'Donohue
                          G Day All ... I m probably being stupid but... When plotting the New Horizons output for P/2003 K2 in SkyMap its way the heck over in Scorpio, as seen from H1b
                          Message 12 of 15 , Dec 12, 2008
                            G'Day All

                            At 08:55 PM 12/12/2008, Alan wrote:
                            >Gidday Rainer and Maik,
                            >When I turn on the orbit path for this comet in Starry night, it
                            >crosses the FOv locations very close to the star patterns I see this
                            >comet crossing. However the comet is still showing 57 degrees to the
                            >left at Dec9 in StereoB. And is possibly in the righ of HI2a about to
                            >enter Hi1A also. The data was updated today from the harvard site.
                            >
                            >It is probably to much of a coincidence to ignore, so I am inclined
                            >to defer to this comet being P/2003 K2 at this time.

                            I'm probably being stupid but...

                            When plotting the New Horizons output for P/2003 K2 in SkyMap its way
                            the heck over in Scorpio, as seen from H1b
                            *********************************************************************************************************
                            Date_(ZONE)_HR:MN, , ,R.A._(ICRF/J2000.0), DEC_(ICRF/J2000.0),
                            R.A._(a-app), DEC_(a-app), T-mag, N-mag,
                            *********************************************************************************************************
                            $$SOE
                            2008-Dec-08 08:09, , ,17 26 29.29,-39 13 59.1, 17 26 28.13,-39 14
                            02.4, 12.91, 18.58,
                            2008-Dec-08 20:09, , ,17 24 57.22,-39 10 29.5, 17 24 56.04,-39 10
                            32.7, 12.86, 18.58,
                            2008-Dec-09 08:09, , ,17 23 22.64,-39 06 47.4, 17 23 21.45,-39 06
                            50.5, 12.82, 18.58,
                            $$EOE
                            *********************************************************************************************************
                            Yet Alan's comet is in Virgo under Spica (well below and to the
                            right, somewhere in the region of 61 Virginis,you get the idea).
                            Anyway, unless SkyMap is really wrong, or new Horizons is out of
                            whack, I can't see how Alans comet is P/2003 K2

                            Of course, I am probably doing something basically stupid here

                            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
                          • algwat
                            Gidday Gents, Please see the orbit image loaded in the file section, the path is very close. Lower left in red is P/2003 K2. Adjusting the Pericentre time of
                            Message 13 of 15 , Dec 12, 2008
                              Gidday Gents,
                              Please see the orbit image loaded in the file section, the path is
                              very close. Lower left in red is P/2003 K2.
                              Adjusting the Pericentre time of the orbital elements in Starry
                              night to 2450647.5187428 puts in so close.

                              I'll load a second image, with this adjustment.
                              kind regards Alan.

                              --- In stereohunter@yahoogroups.com, "Maik Meyer" <maik@...> wrote:
                              >
                              > Ian,
                              >
                              > >>When I turn on the orbit path for this comet in Starry night, it
                              > >>crosses the FOv locations very close to the star patterns I see
                              this
                              > >>comet crossing. However the comet is still showing 57 degrees to
                              the
                              > >>left at Dec9 in StereoB. And is possibly in the righ of HI2a
                              about to
                              > >>enter Hi1A also. The data was updated today from the harvard
                              site.
                              >
                              > the orbit of P/2003 K2 is uncertain in T by maybe +/- 1 month. So,
                              perihelion time
                              > may be in early December or late january as well. The comet has not
                              yet been
                              > recovered after its last apparition, despite searches along its
                              line of variation
                              > (including by myself from Tahiti).
                              >
                              > So, the angular elements are well fitting, only the perihelion time
                              is off. So,
                              > this is the basis for my suggestion.
                              >
                              > Cheers, Maik
                              > --
                              > If they give you ruled paper, write the other way. * Juan Ramon
                              Jimenez
                              >
                              ______________________________________________________________________
                              __
                              > maik@... http://www.comethunter.de
                              > German Comet Section http://www.fg-kometen.de
                              > http://groups.yahoo.com/group/comets-ml
                              >
                            • Ian Musgrave & Peta O'Donohue
                              G Day All ... Ah, that makes sense. So this may be the first recovery of P/2003 K2. Congratulations still go to Alan. Cheers! Ian
                              Message 14 of 15 , Dec 12, 2008
                                G'Day All

                                At 11:23 PM 12/12/2008, Maik wrote:
                                >Ian,
                                >
                                > >>When I turn on the orbit path for this comet in Starry night, it
                                > >>crosses the FOv locations very close to the star patterns I see this
                                > >>comet crossing. However the comet is still showing 57 degrees to the
                                > >>left at Dec9 in StereoB. And is possibly in the righ of HI2a about to
                                > >>enter Hi1A also. The data was updated today from the harvard site.
                                >
                                >the orbit of P/2003 K2 is uncertain in T by maybe +/- 1 month. So,
                                >perihelion time
                                >may be in early December or late january as well. The comet has not yet been
                                >recovered after its last apparition, despite searches along its line
                                >of variation
                                >(including by myself from Tahiti).
                                >
                                >So, the angular elements are well fitting, only the perihelion time
                                >is off. So,
                                >this is the basis for my suggestion.

                                Ah, that makes sense. So this may be the first recovery of P/2003 K2.
                                Congratulations still go to Alan.

                                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 ... For those wanting to find it in H1B X;Y top left (0,0) X Y 1 20081208_100901_s4h1B 351 0 41 755 2
                                Message 15 of 15 , Dec 17, 2008
                                  G'Day All

                                  At 06:25 AM 12/12/2008, Alan Watson wrote on the night of finding C/2008 X4:
                                  >[snip]
                                  >Also Masanori Uchina recent C3 also is detectable in this sequence.
                                  >kind reagrds, Alan

                                  For those wanting to find it in H1B X;Y top left (0,0)
                                  X
                                  Y
                                  1 20081208_100901_s4h1B 351 0 41 755
                                  2 20081208_104901_s4h1B 815 0 37 752
                                  3 20081208_112901_s4h1B 791 0 32 749
                                  4 20081208_120901_s4h1B 1246 0 29 746
                                  5 20081208_124901_s4h1B 721 0 24 743
                                  6 20081208_132901_s4h1B 1216 0 20 739
                                  7 20081208_140901_s4h1B 1452 0 16 736
                                  8 20081208_144901_s4h1B 1996 0 11 732
                                  9 20081208_152901_s4h1B 1308 0 8 730
                                  10 20081208_160901_s4h1B 806 0 2 726

                                  And here it is in
                                  H1A X Y
                                  1 20081208_152901_s4h1A 1952 0 980 737
                                  2 20081208_160901_s4h1A 1004 0 984 733
                                  3 20081208_164901_s4h1A 1427 0 986 730
                                  4 20081208_172901_s4h1A 2371 0 989 725
                                  5 20081208_180901_s4h1A 2686 0 992 721
                                  6 20081208_184901_s4h1A 2821 0 995 717
                                  7 20081208_192901_s4h1A 3000 0 998 713
                                  8 20081208_204901_s4h1A 1174 0 1004 706
                                  9 20081208_212901_s4h1A 3398 0 1007 701
                                  10 20081208_220901_s4h1A 1623 0 1010 698
                                  11 20081208_224901_s4h1A 5342 0 1012 694
                                  12 20081209_000901_s4h1A 6856 0 1019 685

                                  Mind you, Alan had to show me how to find this one. I found Neptune,
                                  but a blazingly obvious bright comet. Nah. I had been looking
                                  directly at it and not noticed. bah, I'm blind (hat tip to Alan).

                                  Oh, if you want Neptune
                                  X Y
                                  1 20081208_164901_s4h1A 7395 30 552
                                  2 20081208_220901_s4h1A 6435 40 552
                                  3 20081209_000901_s4h1A 7754 45 552
                                  4 20081209_084901_s4h1A 1342 65 551
                                  5 20081209_124901_s4h1A 9598 72 550
                                  6 20081209_204901_s4h1A 8402 89 551

                                  Cheers! Ian

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                                  Ian Musgrave Peta O'Donohue, Jack Francis, Michael James and Andrew
                                  Thomas Musgrave
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