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IAUC 3135: 1977q; NQ Vul

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                                                  Circular No. 3135
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cable Address: SATELLITES, NEWYORK     Telex: 921428
Telephone: (617) 864-5758


COMET TSUCHINSHAN (1977q)
     The following precise positions have been reported:

     1977 UT             R. A. (1950) Decl.       m1     Observer
     Nov.  3.58413     1 23 52.10   + 2 46 53.5          Chang
           4.57095     1 21 39.76   + 2 37 36.6            "
           5.54179     1 19 30.47   + 2 28 36.1            "
           8.55436     1 12 59.30   + 2 01 33.6            "
           9.62014     1 10 44.28   + 1 52 20.4   15     Candy
          10.15625     1 09 37.41   + 1 47 41.9          Helin
          10.21424     1 09 30.08   + 1 47 13.1            "
          10.52373     1 08 51.53   + 1 44 34.3   14     Natori
          10.53108     1 08 50.45   + 1 44 29.7            "

Y. C. Chang et al. (Purple Mountain Observatory, Nanking).
M. P. Candy (Perth Observatory, Bickley).  Diffuse with nucleus.
E. Helin, E. Shoemaker and S. J. Bus (Palomar Mountain Observatory).
Natori and Suzuki (JCPM Yakiimo Station).  Comet diffuse with condensation.
   Measurer: T. Urata.  Communicated by Y. Kozai.

     The following parabolic elements, by the undersigned, are from
nine observations Nov. 3-10.  T and Peri. are rather uncertain.

       T = 1977 Aug. 5.131 ET    Peri. = 320.638
                                 Node  =   4.634   1950.0
       q = 3.63583               Incl. = 168.503

     1977 ET     R. A. (1950) Decl.     Delta     r     Mag.
     Nov.  3     1 25.17    + 2 52.14
          13     1 03.82    + 1 24.1    2.893   3.745   14.0
          23     0 45.54    + 0 12.8
     Dec.  3     0 30.72    - 0 40.0    3.250   3.792   14.3
          13     0 19.26    - 1 15.2
          23     0 10.84    - 1 34.8    3.698   3.847   14.7

                   m1 = 6.0 + 5 log Delta + 10 log r


NQ VULPECULAE
     Visual magnitude estimates by S. O'Meara, Harvard College
Observatory: Aug. 5.10 UT, 11.9; 16.16, 11.7; 26.18, 12.1; Sept. 9.18,
12.1; Oct. 5.06, 12.1; 13.09, 12.1; 24.05, 12.1; Nov. 2.01, 12.3.


1977 November 14               (3135)              Brian G. Marsden

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