Central Bureau for Astronomical Telegrams
IAUC 3633: 1981k; 1981 QB
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 3634
Circular No. 3633
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. 1.66142 0 35 37.36 - 7 50 47.6 15
1.68330 0 35 36.37 - 7 50 55.1
2.73097 0 34 54.56 - 7 56 11.2 15
The object is diffuse, with condensation but without tail.
1981 QB
Gilmore and Kilmartin also provide the only available precise
positions of this object:
1981 UT R. A. (1950) Decl. Mag.
Sept. 1.47126 21 34 02.91 -13 50 31.6 16
1.49360 21 34 01.27 -13 52 45.7
2.34637 21 33 04.48 -15 17 03.2 14.0
2.35782 21 33 03.44 -15 18 14.9
2.50991 21 32 52.22 -15 33 19.0
2.53259 21 32 50.50 -15 35 37.6
2.62542 21 32 43.69 -15 44 51.1
The following orbital elements, determined by the undersigned
from the Mt. John observations, are necessarily somewhat
uncertain:
T = 1981 Nov. 18.948 ET
Peri. = 246.828 e = 0.43066
Node = 154.002 1950.0 a = 1.97690 AU
Incl. = 38.236 n = 0.354590
q = 1.12553 AU P = 2.78 years
1981 ET R. A. (1950) Decl. Delta r Mag.
Sept. 3 21 32.32 -16 22.4
5 21 30.08 -19 43.7 0.376 1.360 15.9
7 21 27.87 -23 06.1
9 21 25.74 -26 27.4 0.374 1.339 16.0
11 21 23.69 -29 45.5
13 21 21.75 -32 58.3 0.380 1.319 16.2
1981 September 4 (3633) Brian G. Marsden
Read IAUC 3634
Our Web policy. Index to the CBAT/MPC/ICQ pages.
