Central Bureau for Astronomical Telegrams
IAUC 3635: 1981k; 1981 QB
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Read IAUC 3636
Circular No. 3635
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 HOWELL (1981k)
The following precise positions have been obtained by A. C.
Gilmore and P. M. Kilmartin at Mt. John University Observatory:
1981 UT R. A. (1950) Decl. m2
Sept. 6.53517 0 32 10.05 - 8 15 09.6 15
6.54832 0 32 09.57 - 8 15 12.6
The following parabolic and elliptical orbital elements have
been determined by the undersigned from the Mt. John observations
Sept. 1-6. The ellipse is preferred and used for the ephemeris.
T = 1982 Apr. 13.47 1981 May 19.31 ET
Peri. = 93.45 209.16
Node = 27.50 81.00 1950.0
Incl. = 15.44 5.25
q = 0.7538 1.5088 AU
e = 1.0 0.5985
1981 ET R. A. (1950) Decl. Delta r m2
Sept. 3 0 34.73 - 7 57.16
13 0 26.88 - 8 45.4 0.951 1.936 15.3
23 0 18.04 - 9 22.1
Oct. 3 0 09.71 - 9 41.0 1.076 2.060 15.8
1981 QB
Ephemeris from the orbital elements on IAUC 3634:
1981 ET R. A. (1950) Decl. Delta r Mag.
Sept. 5 21 30.05 -19 46.5 0.374 1.359 15.9
7 21 27.78 -23 14.2
9 21 25.54 -26 43.5 0.369 1.334 16.0
11 21 23.35 -30 11.9
13 21 21.24 -33 37.2 0.370 1.309 16.1
15 21 19.23 -36 57.5
17 21 17.34 -40 11.1 0.377 1.285 16.3
19 21 15.61 -43 16.6
21 21 14.05 -46 13.0 0.390 1.261 16.4
23 21 12.71 -48 59.9
25 21 11.62 -51 37.0 0.408 1.239 16.6
1981 September 8 (3635) Brian G. Marsden
Read IAUC 3636
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