Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 4009: 1984t

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 4008 SEARCH Read IAUC 4010
IAUC number 

                                                  Circular No. 4009
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 617-495-7244/7440/7444


COMET LEVY-RUDENKO (1984t)
     Total visual magnitude estimates: Nov. 15.17 UT, 10.5: (C. S.
Morris, Tujunga, CA, 0.25-m reflector); 15.42, 10.2 (R. McNaught,
Coonabarabran, NSW, 20 x 120 binoculars); 16.07, 9.4 (R. Keen, Mt.
Thorodin, CO, 0.32-m reflector); 17.99, 9.4 (D. W. E. Green,
Cambridge, MA, 0.23-m refractor).

     The following precise positions have been reported:

  1984 UT           R.A.   (1950.0)  Decl.     m1    Observer

  Nov. 14.95970   18 47 21.9    +10 09 45            Schwartz
       15.12317   18 47 17.41   +10 15 00.7          Gibson
       16.09797   18 46 53.76   +10 46 23.6            "
       16.44053   18 46 45.39   +10 57 24.9   10     Seki
       17.08576   18 46 29.97   +11 18 07.1          Everhart
       17.39236   18 46 22.74   +11 27 59.1   10.5   Koishikawa
       17.40017   18 46 22.36   +11 28 14.5   10     Seki
       17.40764   18 46 22.40   +11 28 27.1          Koishikawa
       17.97806   18 46 08.7    +11 46 46            McCrosky
       18.37882   18 45 59.34   +11 59 38.1   10.5   Koishikawa
       18.39965   18 45 58.77   +12 00 16.6            "
       18.42049   18 45 58.39   +12 00 57.4            "

G. Schwartz and R. E. McCrosky (Oak Ridge Observatory).  0.4-m
   astrograph. Images diffuse.  Measurer: McCrosky.
J. Gibson (Palomar).  1.2-m Schmidt.  Nov. 15: 10" jet extending
   eastward of stellar condensation.  Nov. 16: stellar
   condensation with extremely faint coma.
T. Seki (Geisei).  0.6-m reflector.  Comet extremely condensed.
E. Everhart and S. Innes (Chamberlin Observatory field station).
   0.4-m reflector.  Comet image trailed.
M. Koishikawa (Sendai Observatory, Ayashi Station).  0.2-m
   reflector. Measurer: S. Kasahara.  Some condensation.

     Parabolic elements by S. Nakano, Tokyo, and the undersigned:

              S. Nakano                 B. G. Marsden
        T = 1984 Dec. 14.54 ET      T = 1984 Dec. 14.25 ET
    Peri. =  84.01              Peri. =  82.73
    Node  = 330.08   1950.0     Node  = 330.45   1950.0
    Incl. =  64.68              Incl. =  65.72
        q =   0.9067 AU             q =   0.9182 AU
          (8 obs. Nov. 16-18)        (12 obs. Nov. 14-18)


1984 November 19               (4009)              Brian G. Marsden

Read IAUC 4008 SEARCH Read IAUC 4010

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

Valid HTML 4.01!