Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 3460: 1980a

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 3459 SEARCH Read IAUC 3461
IAUC number 

                                                  Circular No. 3460
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


PERIODIC COMET FORBES (1980a)
     H.-E. Schuster, European Southern Observatory, reports the
recovery of this comet.  Available positions are:

     1980 UT             R. A. (1950) Decl.        m1    Observer
     Mar. 12.26875    13 37.09      - 8 36.0     19-20   Schuster
          13.26042    13 36.8       - 8 37      19.5-20  Schwartz
          13.32389    13 36.7       - 8 36                 "
          14.21770    13 36.40      - 8 35.0             Schuster

H.-E. Schuster (European Southern Observatory).  Image somewhat
   diffuse, particularly on Mar. 14.
G. Schwartz and C.-Y. Shao (Harvard College Observatory, Agassiz
   Station).  Diffuse with possible condensation.

     The recovery indicates that the predicted ephemeris on MPC
5041 (elements on MPC 4773) requires correction by Delta-T = -0.58 day.
A corrected ephemeris follows:

     1980 ET     R. A. (1950) Decl.     Delta     r      m2
     Mar.  2    13 39.04    - 8 33.7    1.658   2.461   20.0
          12    13 37.20    - 8 36.6
          22    13 32.49    - 8 27.0    1.385   2.334   19.4
     Apr.  1    13 25.09    - 8 05.9
          11    13 15.59    - 7 36.1    1.204   2.206   18.8
          21    13 05.05    - 7 02.7
     May   1    12 54.92    - 6 32.7    1.123   2.080   18.4
          11    12 46.58    - 6 13.5
          21    12 41.17    - 6 10.8    1.127   1.956   18.2
          31    12 39.36    - 6 28.4
     June 10    12 41.33    - 7 07.3    1.182   1.839   18.0
          20    12 47.07    - 8 07.0
          30    12 56.35    - 9 25.9    1.256   1.731   17.9
     July 10    13 08.91    -11 01.4
          20    13 24.56    -12 51.0    1.330   1.636   17.8
          30    13 43.12    -14 51.2
     Aug.  9    14 04.46    -16 58.1    1.399   1.559   17.7
          19    14 28.52    -19 07.2
          29    14 55.19    -21 13.2    1.467   1.506   17.6
     Sept. 8    15 24.37    -23 10.0
          18    15 55.87    -24 51.6    1.543   1.481   17.6


1980 March 14                  (3460)              Brian G. Marsden

Read IAUC 3459 SEARCH Read IAUC 3461

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

Valid HTML 4.01!