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Re: comet at Cor2a 18072009

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  • karlbattams
    Hi All, I also couldn t find it in COR2-B, but my sharp-eyed summer student Shannon Hicks (who s name you may have spotted on some recent MPECs) was able to
    Message 1 of 13 , Jul 22, 2009
      Hi All,

      I also couldn't find it in COR2-B, but my sharp-eyed summer student Shannon Hicks (who's name you may have spotted on some recent MPECs) was able to find it. It actually looks quite different in COR2-B than COR2-A -- I was very surprised. Here are a few of the positions Shannon found:
      COR2-B, 1024x1024, (0,0) lower-left
      2009-07-18T14:22:49 533 194
      2009-07-18T15:22:49 537 207
      2009-07-18T16:22:49 540 218
      2009-07-18T19:22:49 550 255
      2009-07-18T22:52:49 566 303

      So we (actually, Shannon again) can confirm this comet as STEREO-21 -- congrats, Michal! She has made the measurements and we sent them off to Brian a while ago along with the remaining unmeasured SECCHI/STEREO comets (#8,#18 and #19).

      You'll see that we've very close to being up-to-date with SOHO again. I now need to update the website...

      Regards,
      ~~Karl

      --- In stereohunter@yahoogroups.com, Michal Kusiak <komeciarz@...> wrote:
      >
      >
      > Thank you, Rainer. :)
      > It seems that the comet is not visible in COR 2B images.
      > I submitted possible one position for 23:52 but incorrect.
      >
      > Best wishes
      > ~~Michal
      >
      >
      >
      > ATTACHED:
      >
      > Further to my post of:
      > 1024 COR2A images
      > 2009-07-18
      > Upper Left
      > Kreutz comet
      >
      > 2122 932 793
      > 2152 920 784
      > 2222 908 776
      > 2252 896 767
      > 2322 884 758
      > 2352 872 750
      >
      > Entering in 2B
      > 2352 892 850
      >
    • Michal Kusiak
      Hello Everyone, Someone try to find Rainer s C3/C3 non group comet (from Jun30) in COR2 images? Comet was quite right (perhaps ~6 mag). So, I think there is a
      Message 2 of 13 , Jul 23, 2009
        Hello Everyone,

        Someone try to find Rainer's C3/C3 non group comet (from Jun30) in COR2 images?
        Comet was quite right (perhaps ~6 mag). So, I think there is a chance to find that.
        What do you think?

        Best wishes,
        Michal
      • komeciarz
        ... should be: quite bright* Sorry :D --MK
        Message 3 of 13 , Jul 23, 2009
          > Comet was quite ' right '

          should be: quite bright*

          Sorry :D


          --MK
        • Rainer Kracht
          ... Not impossible, but very difficult. Maximum brightness was about mag 6.5. I have made these measurements: CK09M000 C2009 06 29.97109 06 32 17.11 +26 30
          Message 4 of 13 , Jul 23, 2009
            On 23 Jul 2009, at 12:36, Michal Kusiak wrote:

            >
            > Hello Everyone,
            >
            > Someone try to find Rainer's C3/C3 non group comet (from Jun30) in COR2 images?
            > Comet was quite right (perhaps ~6 mag). So, I think there is a chance to find that.
            > What do you think?
            >
            > Best wishes,
            > Michal
            >
            Not impossible, but very difficult.
            Maximum brightness was about mag 6.5.
            I have made these measurements:

            CK09M000 C2009 06 29.97109 06 32 17.11 +26 30 07.6 7.47N 249
            CK09M000 s2009 06 29.97109 2 -0.00569753 +0.00866373 +0.00337636 249
            CK09M000 C2009 06 30.01265 06 32 23.33 +26 16 50.9 7.63N 249
            CK09M000 s2009 06 30.01265 2 -0.00570236 +0.00866255 +0.00337473 249
            CK09M000 C2009 06 30.02932 06 32 22.95 +26 11 46.3 7.32N 249
            CK09M000 s2009 06 30.02932 2 -0.00570430 +0.00866207 +0.00337408 249
            CK09M000 C2009 06 30.07098 06 32 29.60 +25 57 34.5 7.78N 249
            CK09M000 s2009 06 30.07098 2 -0.00570913 +0.00866088 +0.00337245 249
            CK09M000 C2009 06 30.09601 06 32 32.94 +25 49 14.0 7.16N 249
            CK09M000 s2009 06 30.09601 2 -0.00571203 +0.00866017 +0.00337147 249
            CK09M000 C2009 06 30.11266 06 32 36.01 +25 43 26.5 7.06N 249
            CK09M000 s2009 06 30.11266 2 -0.00571395 +0.00865969 +0.00337082 249
            CK09M000 C2009 06 30.13777 06 32 39.80 +25 34 34.4 7.14N 249
            CK09M000 s2009 06 30.13777 2 -0.00571685 +0.00865898 +0.00336984 249
            CK09M000 C2009 06 30.15432 06 32 41.93 +25 28 44.8 6.73N 249
            CK09M000 s2009 06 30.15432 2 -0.00571876 +0.00865850 +0.00336920 249
            CK09M000 C2009 06 30.17932 06 32 46.20 +25 19 45.8 6.50N 249
            CK09M000 s2009 06 30.17932 2 -0.00572164 +0.00865779 +0.00336822 249
            CK09M000 C2009 06 30.19598 06 32 48.58 +25 13 31.8 6.38N 249
            CK09M000 s2009 06 30.19598 2 -0.00572356 +0.00865731 +0.00336757 249
            CK09M000 C2009 06 30.22101 06 32 52.24 +25 03 52.8 6.49N 249
            CK09M000 s2009 06 30.22101 2 -0.00572644 +0.00865660 +0.00336659 249
            CK09M000 C2009 06 30.23765 06 32 54.48 +24 57 54.1 6.39N 249
            CK09M000 s2009 06 30.23765 2 -0.00572835 +0.00865612 +0.00336594 249
            CK09M000 C2009 06 30.25435 06 32 58.66 +24 51 12.7 6.68N 249
            CK09M000 s2009 06 30.25435 2 -0.00573027 +0.00865564 +0.00336529 249
            CK09M000 C2009 06 30.26265 06 33 00.22 +24 48 22.4 6.03N 249
            CK09M000 s2009 06 30.26265 2 -0.00573122 +0.00865541 +0.00336497 249
            CK09M000 C2009 06 30.27102 06 33 02.38 +24 44 43.6 7.03N 249
            CK09M000 s2009 06 30.27102 2 -0.00573218 +0.00865517 +0.00336464 249
            CK09M000 C2009 06 30.28769 06 33 05.79 +24 38 00.5 6.89N 249
            CK09M000 s2009 06 30.28769 2 -0.00573409 +0.00865469 +0.00336399 249
            CK09M000 C2009 06 30.31377 06 33 12.05 +24 27 21.7 7.14N 249
            CK09M000 s2009 06 30.31377 2 -0.00573708 +0.00865394 +0.00336297 249
            CK09M000 C2009 06 30.32935 06 33 15.66 +24 20 51.4 7.21N 249
            CK09M000 s2009 06 30.32935 2 -0.00573886 +0.00865350 +0.00336237 249
            CK09M000 C2009 06 30.33769 06 33 17.64 +24 17 22.3 7.47N 249
            CK09M000 s2009 06 30.33769 2 -0.00573981 +0.00865326 +0.00336204 249
            CK09M000 C2009 06 30.35435 06 33 21.10 +24 10 05.5 7.56N 249
            CK09M000 s2009 06 30.35435 2 -0.00574172 +0.00865278 +0.00336139 249

            Regards, Rainer
          • Dimitry Chestnov
            Here are paths of this comet in COR2A and COR2B. Square marks brightness maximum according to Rainer Kracht (June 30, 5h UT).
            Message 5 of 13 , Jul 24, 2009
              Here are paths of this comet in COR2A and COR2B. Square marks brightness maximum according to Rainer Kracht (June 30, 5h UT).

              http://astro.21ball.ru/etc/CK09M000_COR2A.png
              http://astro.21ball.ru/etc/CK09M000_COR2B.png

              Orbital elements calculated from Rainer's astrometry:

              TP 2009 June 30.59
              q 0.0262
              e 1.0
              Peri. 215.29
              Node 248.21 J2000.0
              Incl. 86.03

              From 20 observations 2009 June 29-30 (9.2 hr); RMS 19.6"
            • rainerkracht
              Hi Dimitry, thanks for the COR2 PNGs. A better orbit is TP 2009 June 30.594 q 0.0210 e 1.0 Peri. 228.73 Node 253.43 J2000.0 Incl. 89.52 From 21
              Message 6 of 13 , Jul 24, 2009
                Hi Dimitry,

                thanks for the COR2 PNGs.

                A better orbit is

                TP 2009 June 30.594
                q 0.0210
                e 1.0
                Peri. 228.73
                Node 253.43 J2000.0
                Incl. 89.52

                From 21 observations 2009 June 29-30 (9.2 hr); RMS 12.1"

                I don't think that this will change the path in COR2 very much.

                Rainer

                --- In stereohunter@yahoogroups.com, "Dimitry Chestnov" <dirl89@...> wrote:
                >
                > Here are paths of this comet in COR2A and COR2B. Square marks brightness maximum according to Rainer Kracht (June 30, 5h UT).
                >
                > http://astro.21ball.ru/etc/CK09M000_COR2A.png
                > http://astro.21ball.ru/etc/CK09M000_COR2B.png
                >
                > Orbital elements calculated from Rainer's astrometry:
                >
                > TP 2009 June 30.59
                > q 0.0262
                > e 1.0
                > Peri. 215.29
                > Node 248.21 J2000.0
                > Incl. 86.03
                >
                > From 20 observations 2009 June 29-30 (9.2 hr); RMS 19.6"
                >
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