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IAUC 6287: 1996 A1; C/1995 O1

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                                                  Circular No. 6287
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 1996 A1
     Robert Jedicke, Lunar and Planetary Laboratory, reports the
discovery, by Victoria Jedicke and himself, of a comet with the
Spacewatch telescope at Kitt Peak.  There is a tail 6' long in
p.a. about 290 deg.

     1996 UT             R.A. (2000) Decl.        m1
     Jan. 14.26142    9 24 18.02   + 7 08 53.2   17.0
          14.36210    9 24 15.45   + 7 08 55.8
          14.52254    9 24 11.32   + 7 09 00.3
          15.28146    9 23 52.55   + 7 09 23.5
          15.40406    9 23 49.35   + 7 09 27.6   17.1
          15.52343    9 23 46.23   + 7 09 31.8


COMET C/1995 O1 (HALE-BOPP)
     This ephemeris continuation (cf. IAUC 6224) is from the orbital
elements on MPC 26374, which utilize observations through 1995 Dec. 8.
With appropriate relative weighting of the 1993 and 1995 data, the
reliability of the 1993 Apr. 27 observation (cf. IAUC 6198, 6202) is
confirmed.  The 'original' and 'future' values of 1/a are +0.0039 and
+0.0056 AU**-1 (P about 4200 and 3400 yr).  The positional uncertainty
in Apr. 1997 is about 2'.

1996 TT     R. A. (2000) Decl.     Delta      r    Elong. Phase      m1
Feb. 17    19 23.20    -22 33.4    6.019    5.282   38.5    6.7      9.1
     27    19 28.80    -21 56.0    5.807    5.186   47.2    8.1      9.0
Mar.  8    19 33.84    -21 17.1    5.578    5.089   56.0    9.3      8.8
     18    19 38.16    -20 36.7    5.333    4.992   64.9   10.4      8.6
     28    19 41.59    -19 54.7    5.076    4.893   73.9   11.3      8.4
Apr.  7    19 43.95    -19 11.4    4.811    4.794   83.1   12.0      8.2
     17    19 45.05    -18 26.6    4.543    4.694   92.5   12.3      8.0
     27    19 44.66    -17 40.3    4.275    4.594  102.2   12.4      7.8
May   7    19 42.58    -16 52.5    4.013    4.492  112.2   12.0      7.5
     17    19 38.59    -16 03.0    3.762    4.390  122.5   11.2      7.3
     27    19 32.50    -15 11.4    3.528    4.287  133.3    9.9      7.1
June  6    19 24.23    -14 17.6    3.316    4.183  144.3    8.1      6.8
     16    19 13.82    -13 21.5    3.132    4.078  155.4    5.9      6.6
     26    19 01.49    -12 23.2    2.980    3.972  165.4    3.7      6.4
July  6    18 47.75    -11 23.6    2.864    3.865  168.2    3.1      6.2
     16    18 33.27    -10 24.1    2.785    3.757  160.1    5.3      6.0
     26    18 18.91    - 9 26.3    2.743    3.647  148.5    8.4      5.8

                      (C) Copyright 1996 CBAT
1996 January 15                (6287)              Brian G. Marsden

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