Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 2860: 1975n

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 2859 SEARCH Read IAUC 2861
IAUC number 

                                                  Circular No. 2860
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
Western Union: RAPID SATELLITE CAMBMASS


COMET WEST (1975n)
     Richard M. West, European Southern Observatory, Geneva, telexes
that he has discovered the trail of a comet on a 60-min exposure
with the 100-cm Schmidt telescope at La Silla on Sept. 24.  He
subsequently identified similar trails on exposures made on Aug. 10
and 13.  Accurately measured positions of the beginning and end of
each trail follow.  The trails were dfffuse, with a possible faint
tail to the north.  On Sept. 24 the tail was about 10" long and the
head 2" to 3" in diameter.

     1975 UT             R. A. (1950) Decl.        m1    Observer
     Aug. 10.2123     21 57 13.41   -37 49 55.3  16-17   O. Pizarro
          10.2538     21 57 10.57   -37 50 17.8            "
          13.1868     21 53 04.90   -38 23 17.0   16     G. Pizarro
          13.2283     21 53 01.59   -38 23 42.6            "
     Sept.24.0236     20 45 59.49   -42 57 19.4  14-15     "
          24.0652     20 45 jo.73   -42 57 23.1            "

     The following parabolic elements, by B. G. Marsden, indicate
that the comet should be conveniently placed for observation in the
northern hemisphere in the morning sky at m1 ~ 5 in mid-March 1976:

       T = 1976 Feb. 24.81 ET    Peri. = 358.47
                                 Node  = 117.81    1950.0
       q = 0.1997 AU             Incl =   42.45

     1975/76 ET  R. A. (1950) Decl.     Delta     r      m1
     Oct. 15    20 23.70    -42 32.2    2.373   2.679   13.7
          25    20 18.64    -41 56.4
     Nov.  4    20 17.19    -41 11.5    2.398   2.385   13.2
          14    20 19.16    -40 20.6
          24    20 24.26    -39 25.3    2.380   2.074   12.6
     Dec.  4    20 32.24    -38 25.7
          14    20 42.95    -37 20.8    2.286   1.741   11.7
          24    20 56.29    -36 08.7
     Jan.  3    21 12.30    -34 45.5    2.090   1.377   10.5
          13    21 31.22    -33 05.0
          23    21 53.43    -30 55.9    1.771   0.967    8.6

               m1 = 7.5 + 5 log Delta + 10 log r


1975 November 6                (2860)              Brian G. Marsden

Read IAUC 2859 SEARCH Read IAUC 2861

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

Valid HTML 4.01!