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IAUC 5195: 1991i

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IAUC number 

                                                  Circular No. 5195
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


PERIODIC COMET KOWAL 1 (1991i)
     J. V. Scotti, University of Arizona, reports his recovery of
this comet with the Spacewatch telescope at Kitt Peak.  On Feb. 21
UT, there was a 15" coma and a 29" tail in p.a. 297 deg; on Feb.
21.428, m2 = 21.1.  On Feb. 22, there was a 40" tail in p.a. 295
deg; on Feb. 22.391, m2 = 20.7.  The comet is some 3 deg from the
predicted elements on MPC 14593, which require substantial
corrections in both T and omega.

     1991 UT             R.A. (1950) Decl.        m1
     Feb. 21.40778   11 11 00.11   + 9 30 42.7   18.4
          21.42844   11 10 59.51   + 9 30 46.4
          21.45072   11 10 58.88   + 9 30 50.0
          22.29616   11 10 35.45   + 9 33 09.5
          22.37032   11 10 33.34   + 9 33 21.7   18.4
          22.39080   11 10 32.74   + 9 33 25.0
          22.41787   11 10 31.99   + 9 33 29.2

     The following orbital elements by B. G. Marsden, Center for
Astrophysics, are from 15 observations 1977-1991, mean residual 0".6:

                    Epoch = 1977 Jan. 17.0 ET
     T = 1976 Dec. 29.87462 ET        Peri. = 172.07929
     e = 0.2355957                    Node  =  28.46465 1950.0
     q = 4.6563967 AU                 Incl. =   4.38877
       a =  6.0915364 AU   n = 0.06555621   P =  15.035 years

                    Epoch = 1992 Feb. 28.0 ET
     T = 1992 Mar. 10.35418 ET        Peri. = 174.42915
     e = 0.2328662                    Node  =  28.11994 1950.0
     q = 4.6691224 AU                 Incl. =   4.38495
       a =  6.0864516 AU   n = 0.06563837   P =  15.016 years

     1991 ET      R.A. (1950) Decl.     Delta      r       m1
     Feb. 13    11 14.74    + 9 08.0    3.974    4.897    18.3
          23    11 10.34    + 9 34.6
     Mar.  5    11 05.45    +10 02.0    3.886    4.876    18.3
          15    11 00.46    +10 27.8
          25    10 55.77    +10 49.6    3.919    4.855    18.3
     Apr.  4    10 51.74    +11 05.5


1991 February 23               (5195)             Daniel W. E. Green

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