Central Bureau for Astronomical Telegrams
IAUC 3287: 1978o; U Gem
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Circular No. 3287
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 BRADFIELD (1978o)
D. Herald, Kambah, near Canberra, provides the following
precise positions. obtained with a 31-cm reflector:
1978 UT R. A. (1950) Decl.
Oct. 11.75479 11 02 46.68 -20 36 54.3
11.75771 11 02 47.11 -20 37 01.8
12.75056 11 04 23.89 -22 13 15.1
12.76632 11 04 25.33 -22 14 55.3
13.75743 11 06 28.99 -23 58 47.8
13.76444 11 06 30.38 -23 59 35.4
The following parabolic orbital elements have been calculated.
The ephemeris is from the second set.
D. Herald B. G. Marsden
(3 obs. Oct. 11-13) (6 obs. Oct 11-13)
T = 1978 Sept 28.622 1978 Sept. 29.198 ET
Peri. = 239.92 240.535
Node = 358.86 357.422 1950.0
Incl. = 138.38 138.233
q = 0.4221 0.43408 AU
1978 ET R. A. (1950) Decl. Delta r m1
Oct. 19 11 28.36 -35 59.4 0.559 0.658 8.4
21 11 45.04 -42 09.9
23 12 10.98 -49 15.5 0.461 0.730 8.5
25 12 53.29 -56 50.3
27 14 04.27 -63 36.0 0.411 0.803 8.6
29 15 50.92 -67 02.2
31 17 41.47 -65 22.0 0.422 0.877 9.1
Nov. 2 18 58.38 -60 16.0
4 19 44.91 -54 15.7 0.490 0.950 9.7
6 20 13.88 -48 35.7
8 20 33.17 -43 38.4 0.593 1.024 10.5
U GEMINORUM
J. Mattei, American Association of Variable Star Observers,
communicates the following magnitude estimates by J. Morgan, Prescott,
AZ: Oct. 12.52 UT, 14; 13.51, 10.3; 14.52, 9.8.
1978 October 16 (3287) Brian G. Marsden
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