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IAUC 6235: P/1995 S1 = P/1846 D1

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                                                  Circular No. 6235
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
Phone 617-495-7244/7440/7444 (for emergency use only)


COMET P/1995 S1 = P/1846 D1 (DE VICO)
     The following additional precise positions are available:

     1995 UT             R.A. (2000) Decl.        m1    Observer
     Sept.20.80420    9 14 32.68   + 0 28 45.6          Yusa
          20.80660    9 14 33.30   + 0 28 53.1    6.5   Otomo
          20.80709    9 14 33.36   + 0 28 53.7          Yusa
          20.80747    9 14 33.58   + 0 28 55.7          Otomo
          20.82017    9 14 36.38   + 0 29 39.6          Yusa
          21.74909    9 18 17.40   + 1 26 50.2          Garradd
          21.75166    9 18 17.95   + 1 26 59.6            "
          21.75371    9 18 18.48   + 1 27 07.3            "
          21.77839    9 18 24.34   + 1 28 32.5          Cross
          21.79288    9 18 27.82   + 1 29 33.7          Garradd
          21.79390    9 18 28.08   + 1 29 38.5            "
          21.79731    9 18 28.92   + 1 29 43.3          Cross
          21.81362    9 18 32.87   + 1 30 43.9            "
          22.15762    9 19 57.10   + 1 52 11.0          Tichy
          22.15837    9 19 57.20   + 1 52 13.4            "
          22.15910    9 19 57.46   + 1 52 16.2            "

T. Yusa (Kogota).  Communicated by A. Nakamura, Kuma, Ehime, Japan.
S. Otomo (Kiyosato).  0.25-m f/3.4 reflector.  Comm. by A. Nakamura.
G. J. Garradd (Loomberah, N.S.W.).  0.25-m f/4.1 reflector + CCD.
K. Cross (Sendai Astronomical Observatory).  Comm. by A. Nakamura.
M. Tichy, Z. Moravec (Klet).  0.57-m refl. + CCD + R filter.  m2 =
   11.3.

     The following orbital elements by the undersigned are from 61
observations, 1846 Mar. 4-1995 Sept. 22 (mean residual 2".2; cf.
IAUC 6232):

                    Epoch = 1995 Oct. 10.0 TT
     T = 1995 Oct.  6.0235 TT         Peri. =  12.9708
     e = 0.962734                     Node  =  79.6210  2000.0
     q = 0.658959 AU                  Incl. =  85.3981
       a = 17.682741 AU    n = 0.0132550    P =  74.357 years

The elements for epoch 1846 Mar. 5.0 TT are T = 1846 Mar. 6.044 TT,
e = 0.96302, q = 0.66384 AU, Peri. = 12o.907, Node = 79o.703, i =
85o.118; these also suggest T = 1922 Apr. 8.4 TT.  The ephemerides
on IAUC 6232-6233 agree with those computed from this orbit to
within about 0'.5 on Oct. 30.


1995 September 22              (6235)            Daniel W. E. Green

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