Central Bureau for Astronomical Telegrams
IAUC 3394: 1979g; 1979c
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Read IAUC 3395
Circular No. 3394
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
PERIODIC COMET SCHWASSMANN-WACHMANN 3 (1979g)
M. P. Candy, Perth Observatory, reports the following precise
position obtained by J. Johnston and himself:
1979 UT R. A. (1950) Decl. m1
Aug. 19.45972 12 55 54.53 - 5 48 09.2 13
Candy also provides the following orbital elements and ephemeris
(extended by the undersigned), based on 3 observations from Aug.
13-19, which indicate that this is indeed P/Schwassmann-Wachmann 3:
T = 1979 Sept. 2.43 ET
Peri. = 198.04 e = 0.7366
Node = 68.09 1950.0 a = 3.6282 AU
Incl. = 11.57 n = 0.1426
q = 0.9565 AU P = 6.91 years
1979 ET R. A. (1950) Decl. Delta r m1
Aug. 10 12 25.00 - 0 30.9
15 12 40.94 - 3 15.3 1.289 0.996 13.0
20 12 57.79 - 6 07.3
25 13 15.64 - 9 05.7 1.223 0.965 12.8
30 13 34.62 -12 09.1
Sept. 4 13 54.84 -15 15.4 1.164 0.957 12.6
9 14 16.46 -18 21.8
14 14 39.59 -21 24.7 1.118 0.972 12.6
19 15 04.35 -24 20.0
24 15 30.77 -27 02.7 1.093 1.010 12.7
29 15 58.79 -29 27.8
m1 = 12.5 + 5 log Delta + 10 log r
COMET BRADFIELD (1979c)
H. Kosai, Tokyo Astronomical Observatory, communicates the following
precise position by T. Seki, Geisei Sta., Kochi Observatory:
1979 UT R. A. (1950) Decl. m1
Aug. 18.76389 7 12 31.08 +47 18 18.7 15
1979 August 20 (3394) Daniel W. E. Green
Read IAUC 3395
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