THE ASTRONOMER Electronic Circular No 607 1992 Feb 08 15.46UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke,
Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074
Telex: 9312111261 Answerback: TA G JANET BOXES:
GMH at UK.AC.CAM.ASTRONOMY.STARLINK or GUYH at UK.AC.SUSSEX.CLUSTER
TELECOM GOLD: 10074:MIK2885 PRESTEL 256471074
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COMET BRADFIELD (1992b)
Precise positions measured by P. M. Kilmartin from exposures by
A. Gilmore with the 0.6-m reflector at Mount John University
Observatory (the first image being involved with a flaw):
1992 UT R.A. (2000) Decl.
Feb. 5.63252 16 47 31.02 -42 10 21.1
5.63712 16 47 33.49 -42 10 21.5
5.66067 16 47 45.94 -42 10 25.0
5.66426 16 47 47.70 -42 10 26.2
5.66819 16 47 49.95 -42 10 26.1
Preliminary parabolic orbital elements by R. H. McNaught,
Anglo-Australian Observatory:
T = 1992 Mar. 19.537 TT Peri. = 15.491
Node = 275.305 2000.0
q = 0.49915 AU Incl. = 20.242
IAUC 5445
Ephemeris by Hurst using EPH.EXE by N.James:
m = 9.0 + 5.0 log R + 10.0 log r
Date R.A. (2000) Dec. R r Elong Mag. Motion
h m o ' (AU) (AU) o "/hr
P.A.
1992 Feb
8.00 17 8.80 -42 9.2 1.056 1.031 60.5 9.2 255 88
10.00 17 27.45 -41 56.1 1.037 0.996 58.9 9.1 264 85
12.00 17 46.53 -41 30.6 1.021 0.962 57.2 8.9 273 82
14.00 18 5.89 -40 52.3 1.007 0.928 55.4 8.7 281 79
16.00 18 25.32 -40 0.4 0.997 0.893 53.5 8.5 288 75
18.00 18 44.65 -38 55.1 0.989 0.859 51.5 8.3 294 72
20.00 19 3.70 -37 36.6 0.985 0.825 49.4 8.1 300 69
22.00 19 22.32 -36 5.7 0.984 0.792 47.3 8.0 303 67
24.00 19 40.39 -34 23.4 0.987 0.759 45.2 7.8 306 64
26.00 19 57.82 -32 30.9 0.992 0.727 43.0 7.6 308 62
28.00 20 14.58 -30 29.7 1.002 0.695 40.8 7.4 308 60
1992 Mar
1.00 20 30.64 -28 21.4 1.014 0.665 38.7 7.3 307 58
3.00 20 46.01 -26 7.4 1.030 0.636 36.6 7.1 306 56
5.00 21 0.75 -23 49.1 1.049 0.608 34.5 6.9 303 55
7.00 21 14.89 -21 28.0 1.070 0.583 32.5 6.8 300 54
9.00 21 28.50 -19 5.2 1.095 0.560 30.6 6.7 297 53
11.00 21 41.66 -16 41.9 1.122 0.540 28.8 6.6 294 52
13.00 21 54.41 -14 19.0 1.152 0.524 27.0 6.5 290 52
15.00 22 6.84 -11 57.6 1.183 0.511 25.3 6.5 286 52
17.00 22 18.97 -9 38.4 1.217 0.503 23.7 6.4 281 52
SUPERNOVA 1992D IN ANONYMOUS GALAXY
R. H. McNaught, Anglo-Australian Observatory, reports his
discovery of a supernova (mag about 19) on a red plate taken Jan.
28.6 UT by M. J. Drinkwater with the U.K. Schmidt Telescope. The
supernova is situated in a spiral arm at R.A. = 5h58m50s.93, Decl.
= -20 22'09".2 (equinox 1950.0, uncertainty 0".3 in R.A., 0".5 in
Decl.); the offset from the galaxy's centre is 1".0 west and 7".0
south. No star appears at this location on the ESO R survey. A
nearby field star of mag about 17.5 is located at R.A. =
5h58m55s.53, Decl. = -20 22'19".8.
IAUC 5444
Guy M Hurst