Circular No. 5380
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN
 
 
COMET SHOEMAKER-LEVY (1991a1)
     Orbital elements from MPC 19258:
 
     T = 1992 July 23.7558 ET         Peri. = 145.4157
                                      Node  =  48.2948  1950.0
     q = 0.829393 AU                  Incl. = 113.3739
 
     1991 ET      R.A. (1950) Decl.     Delta      r       m1
     Oct. 31     1 56.89    +38 26.1    2.976    3.898    15.8
     Nov. 10     1 36.36    +37 58.9
          20     1 16.13    +37 04.9    2.827    3.677    15.4
          30     0 57.57    +35 50.3
     Dec. 10     0 41.68    +34 24.4    2.821    3.452    15.1
          20     0 28.99    +32 57.3
          30     0 19.53    +31 37.7    2.907    3.221    14.9
 
 
COMET HELIN-LAWRENCE (1991l)
     Ephemeris from elements on MPC 18395:
 
     1991 ET      R.A. (1950) Decl.     Delta      r       m1
     Oct. 31    12 23.24    -31 28.6    2.654    1.880    10.4
     Nov. 10    12 32.62    -36 41.7
          20    12 43.18    -42 45.8    2.317    1.736     9.7
          30    12 55.75    -49 51.6
     Dec. 10    13 12.31    -58 09.1    1.993    1.621     9.1
          20    13 38.78    -67 40.1
          30    14 43.2     -77 56.2    1.769    1.546     8.6
 
 
V1251 CYGNI
     Further visual magnitude estimates:  Oct. 12.84 UT, 13.5 (S.
Korth, Dusseldorf, Germany); 26.39, 12.4 (M. Moriyama, Nagasaki,
Japan; correction to the time 26.89 given on IAUC 5377); 26.83, 12.5
(P. Schmeer, Bischmisheim, Germany; revision to IAUC 5377); 31.98,
12.7 (Schmeer); Nov. 3.77, 13.2 (Schmeer); 4.80, 13.4 (Schmeer).
 
 
1991 November 6                                   Daniel W. E. Green