Central Bureau for Astronomical Telegrams
IAUC 3634: 1981 QA; 1981 QB
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Read IAUC 3635
Circular No. 3634
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
1981 QA
Further precise positions have been reported as follows:
1981 UT R. A. (1950) Decl. Mag.
Aug. 23.50299 20 18 32.28 + 3 03 29.7 13
23.51323 20 18 33.98 + 3 03 08.7
29.12097 20 37 23.42 - 0 15 02.1
T. Aoki (Tokyo Observatory, Kiso Station). Measurer: H. Kosai.
G. Schwartz (Oak Ridge Observatory). Measurer: C.-Y. Shao.
Orbital elements by B. G. Marsden from the arc Aug. 23-30:
T = 1981 Aug. 23.309 ET
Peri. = 154.256 e = 0.45091
Node = 171.782 1950.0 a = 2.16226 AU
Incl. = 8.443 n = 0.309985
q = 1.18728 AU P = 3.18 years
1981 ET R. A. (1950) Decl. Delta r Mag.
Sept.15 21 39.70 - 9 41.9
17 21 47.02 -10 35.1 0.233 1.216 16.8
19 21 54.21 -11 24.1
21 22 01.27 -12 08.8 0.247 1.225 16.9
23 22 08.18 -12 49.0
25 22 14.92 -13 24.9 0.263 1.236 17.1
1981 QB
The following additional accurate positions are by A. C.
Gilmore and P. M. Kilmartin, Mt. John University Observatory:
1981 UT R. A. (1950) Decl. Mag.
Sept. 5.39340 21 29 36.66 -20 27 04.7 13
5.40521 21 29 35.28 -20 28 13.4
Orbital elements by the undersigned from the arc Sept. 1-5:
T = 1981 Nov. 14.786 ET
Peri. = 247.350 e = 0.53419
Node = 153.977 1950.0 a = 2.32758 AU
Incl. = 37.880 n = 0.277554
q = 1.08422 AU P = 3.55 years
1981 September 8 (3634) Brian G. Marsden
Read IAUC 3635
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