Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 3291: 1978m

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 3290 SEARCH Read IAUC 3292
IAUC number 

                                                  Circular No. 3291
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


COMET SEARGENT (1978m)
     Further precise positions from D. Herald, Kambah, near Canberra:

     1978 UT             R. A. (1950) Decl.
     Oct. 11.77132    11 41 56.78   -54 00 20.2
          11.77292    11 41 56.82   -54 00 29.9
          12.73010    11 40 05.21   -55 45 05.4
          12.73128    11 40 05.49   -55 45 15.4
          13.72854    11 37 58.36   -57 35 57.5

     Improved parabolic elements by the undersigned:

       T = 1978 Sept. 14.8641 ET Peri. = 207.8472
                                 Node  =  41.0377  1950
       q = 0.370590 AU           Incl. =  67.8826

     1978    ET  R. A. (1950) Decl.     Delta     r      m1
     Oct. 15    11 34.86    -60 00.1    0.788   0.849    7.3
          17    11 28.99    -63 51.8
          19    11 21.10    -67 49.7    0.758   0.928    7.6
          21    11 09.7     -71 52.2
          23    10 51.7     -75 56.1    0.741   1.005    7.9
          25    10 19.2     -79 54.7
          27     9 07.8     -83 28.4    0.736   1.082    8.2
          29     6 20       -85 22.6
          31     3 21.8     -83 50.2    0.745   1.157    8.5
     Nov.  2     2 03.5     -80 27.4
           4     1 28.8     -76 39.2    0.769   1.231    8.8
           6     1 10.3     -72 48.0
           8     0 59.16    -69 01.4    0.806   1.304    9.2
          10     0 51.86    -65 22.4
          12     0 46.84    -61 52.8    0.856   1.375    9.5

                   m1 = 8.5 + 5 log Delta + 10 log r

     On Oct. 15 this comet was observed with the International
Ultraviolet Explorer Telescope by the I.U.E. Cometary Observations
Group (A. Delsemme, B. Donn, W. Jackson, T. Owen, J. Rahe and A.
Smith).  Spectra were obtained from 1200 A to 3100 A and show L-alpha,
OH 3090 A and C 1672 A, also C02+ 2890 A, and tentatively the S
triplet at 1807-1822 A and CS 2576 A.  There are one or two unidentified
features, and most of the data have not yet been reduced.


1978 October 18                (3291)              Brian G. Marsden

Read IAUC 3290 SEARCH Read IAUC 3292

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

Valid HTML 4.01!