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IAUC 6180: P/1995 M1; P/1995 M2

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                                                  Circular No. 6180
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 M1 (SHOEMAKER-LEVY 4)
     J. V. Scotti, Lunar and Planetary Laboratory, reports his
recovery of comet P/1991 C2 (= 1990 XII = 1991f) with the 0.9-m
Spacewatch telescope at Kitt Peak.  The comet is of stellar
appearance.  The indicated correction (ignoring perturbations)
to the prediction by S. Nakano on MPC 23482 is Delta T about +0.6 day.

     1995 UT             R.A. (2000) Decl.        m2
     June 22.45278   22 31 35.85   - 7 37 23.7   21.9
          22.45800   22 31 35.94   - 7 37 23.4   21.9
          23.41216   22 31 40.18   - 7 37 41.6   21.7
          23.45819   22 31 40.37   - 7 37 42.8

     Orbital elements from 31 observations 1991-1995, mean residual 0".85:

                    Epoch = 1996 Dec. 23.0 TT
     T = 1997 Jan. 12.1950 TT         Peri. = 301.9866
     e = 0.420477                     Node  = 152.0973  2000.0
     q = 2.021244 AU                  Incl. =   8.4734
       a =  3.487771 AU    n = 0.1513150    P =   6.514 years


COMET P/1995 M2 (PARKER-HARTLEY)
     Scotti also reports his recovery of comet P/1989 E1 = 1986 TF
(= 1989 XXXVI = 1989i), the second-night images being obtained by R. Jedicke.
There was a 7" coma (m1 = 19.2) with a tail extending 0'.88 in p.a. 247 deg
on June 23 and 0'.76 in p.a. 248 deg on June 25.  The indicated
correction to the prediction by Nakano on MPC 22031 is Delta T = +0.7 day.

     1995 UT             R.A. (2000) Decl.        m2    Observer
     June 23.43116    0 38 25.69   + 9 17 58.1   20.5   Scotti
          23.45167    0 38 26.58   + 9 18 05.0            "
          25.43013    0 39 54.87   + 9 29 04.5   20.2   Jedicke
          25.43345    0 39 55.01   + 9 29 05.6            "

     Orbital elements from 27 observations 1986-1995, mean residual 0".98:

                    Epoch = 1996 June  6.0 TT
     T = 1996 June 25.9910 TT         Peri. = 181.1934
     e = 0.290368                     Node  = 244.3013  2000.0
     q = 3.046185 AU                  Incl. =   5.1835
       a =  4.292628 AU    n = 0.1108203    P =   8.894 years


1995 June 28                   (6180)              Brian G. Marsden

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