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IAUC 3346: N Vul 1979; 1979a

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                                                  Circular No. 3346
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM     Telephone 617-864-5758


NOVA VULPECULAE 1979
     G. M. Hurst, Northampton, England, communicates the following
prediscovery observation by M. Swan, Wimborne Minster, Dorset,
England: Apr. 3.175 UT, mpv = 8.6.

     J. Mattei, American Association of Variable Star Observers,
provides further visual magnitude estimates as follows: Apr. 11.51
UT, 9.0 (J. Morgan, Prescott, AZ); 12.47, 8.6 (P. L. Collins,
Tucson, AZ); 16.37, 7.9 (D. Weier, Madison, WI).


PERIODIC COMET KOWAL 2 (1979a)
     Further precise positions have been reported as follows:

     1979 UT             R. A. (1950) Decl.        m1    Observer
     Mar.  1.17118     4 24 56.45   + 9 28 47.1   17     Young
          23.23264     5 23 54.43   + 9 45 04.2   18     Kowal
          28.08417     5 36 43.12   + 9 45 09.3          Shao

P. Young and C. Kowal (Hale Observatories).  Measurer: Kowal.
   Extremely weak and diffuse on Mar. 23.
C.-Y. Shao (Harvard College Observatory, Agassiz Station).  155-cm
   reflector.  Measurer: J. H. Bulger.

       Improved orbital elements, by the undersigned, from 11
observations Jan. 27 to Mar. 28:

       T = 1979 Jan. 13.740 ET
   Peri. = 189.380                    e =   0.56380
   Node  = 247.163   1950.0           a =   3.48667 AU
   Incl. =  15.807                    n =   0.151387
       q =   1.52090 AU               P =   6.51 years

     1979 ET     R. A. (1950) Decl.     Delta     r      m1
     May   7     7 17.68    + 8 25.3    2.091   1.901   18.9
          17     7 41.32    + 7 41.3
          27     8 04.21    + 6 48.3    2.362   2.017   19.4
     June  6     8 26.35    + 5 47.1
          16     8 47.73    + 4 38.6    2.638   2.139   19.9
          26     9 08.39    + 3 23.8
     July  6     9 28.35    + 2 03.5    2.909   2.263   20.4


1979 April 18                  (3346)              Brian G. Marsden

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