Central Bureau for Astronomical Telegrams
IAUC 5380: 1991a1; 1991l; V1251 Cyg
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Read IAUC 5381
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 (5380) Daniel W. E. Green
Read IAUC 5381
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