Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 3322: SN IN NGC 4647; 1979a; P/SCHWASSMANN-WACHMANN 1

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 3321 SEARCH Read IAUC 3323
IAUC number 

                                                  Circular No. 3322
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


SUPERNOVA IN NGC 4647
     E. K. Kharadze, Abastumani Observatory; and E. P. Aksenov,
Sternberg Astronomical Institute, cable that G. N. Kimeridze has
discovered a supernova 50" west and 30" north of the nucleus of NGC
4647.  On Jan. 25.97 UT the photovisual magnitude was 15.0.


COMET KOWAL (1979a)
     C. T. Kowal, Hale Observatories, reports the following precise
measurements for the observations given on IAUC 3321:

     1979 UT             R. A. (1950) Decl.        m1
     Jan. 27.11250     2 58 20.22   + 9 23 13.7    17
          28.12361     3 00 52.30   + 9 21 34.9
          29.27431     3 03 46.23   + 9 19 55.2

     The following parabolic orbital elements satisfy these positions
within 0".4.  It is quite probable, however, that the comet is
a short-period one.

       T = 1979 Jan. 24.338 ET   Peri. = 197.264
                                 Node  = 243.141   1950.0
       q = 1.63610 AU            Incl. =  15.925

     1979 ET     R. A. (1950) Decl.     Delta     r      m1
     Jan. 27     2 58.08    + 9 23.4    1.116   1.636   17.0
     Feb.  6     3 23.75    + 9 13.6
          16     3 50.46    + 9 14.7    1.320   1.664   17.3
          26     4 17.74    + 9 21.3
     Mar.  8     4 45.23    + 9 28.9    1.513   1.733   17.8
          18     5 12.55    + 9 33.7
          28     5 39.45    + 9 33.0    1.747   1.836   18.4

                  m1 = 14.5 + 5 log Delta + 10 log r


PERIODIC COMET SCHWASSMANN-WACHMANN 1
     C.-Y. Shao, Harvard College Observatory, informs us that an exposure
with the 155-cm reflector on Jan. 23.28 UT showed a strong,
compact condensation of magnitude ~ 11 and diameter ~ 10".  By Jan.
24.28 there had been a marked decrease in density and increase in
size, with a circular outer coma having become visible.


1979 January 31                (3322)              Brian G. Marsden

Read IAUC 3321 SEARCH Read IAUC 3323

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!