Central Bureau for Astronomical Telegrams
IAUC 5219: 1991 FB; 1991l
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Read IAUC 5220
Circular No. 5219
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
1991 FB
R. H. McNaught, University of Adeliade, reports his discovery
of a fast-moving asteroidal object on U.K. Schmidt plates taken by
S. M. Hughes on Mar. 18 and 19. The Mar. 20 and 21 positions below
were obtained from films taken by McNaught with the Uppsala Southern
Schmidt:
1991 UT R.A. (1950) Decl. V
Mar. 18.69428 13 59 42.73 + 0 29 24.7 17.5
18.74289 13 59 50.38 + 0 27 35.9
19.68878 14 02 36.01 - 0 09 23.6
19.70962 14 02 39.37 - 0 10 12.5
20.69178 14 05 37.43 - 0 50 54.5
21.67258 14 08 42.00 - 1 33 58.3
21.72812 14 08 51.89 - 1 36 28.3
Preliminary orbital elements from the above observations:
T = 1991 May 9.023 ET Peri. = 217.619
e = 0.54461 Node = 18.417 1950.0
q = 1.03951 AU Incl. = 8.969
a = 2.28270 AU n = 0.285779 P = 3.45 years
1991 ET R.A. (1950) Decl. Delta r V
Mar. 15 13 49.80 + 2 35.1 0.276 1.234 17.9
20 14 03.53 - 0 22.3
25 14 20.12 - 4 20.7 0.205 1.176 17.1
30 14 41.06 - 9 41.4
Apr. 4 15 08.55 -16 45.4 0.151 1.125 16.5
9 15 45.82 -25 35.6
14 16 36.80 -35 20.7 0.123 1.085 16.4
19 17 43.44 -43 55.6
24 18 59.75 -49 12.4 0.130 1.056 16.9
COMET HELIN-LAWRENCE (1991l)
Total visual magnitude estimate by A. Hale, Las Cruces, NM
(0.41-m reflector): Mar. 21.45 UT, 13.6.
1991 March 21 (5219) Daniel W. E. Green
Read IAUC 5220
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