THE ASTRONOMER Electronic Circular No 416 1990 May 27 15.50UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke,
Hants, RG22 4PP, England. Telephone: (0256)471074 Int:+44256471074
Telex: 94082518 Answerback: TAGUY Microlink: MAG60138
JANET:GMH @ UK.AC.CAM.ASTRONOMY.STARLINK or GUYH@UK.AC.SUSSEX.CLUSTER
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COMET LEVY (1990c)
The following additional precise positions have been reported:
1990 UT R.A. (1950) Decl. m1 Observer
May 21.74792 23 55 08.70 +27 35 32.8 11 Seki
21.78854 23 55 10.08 +27 35 40.2 "
24.74774 23 56 48.63 +27 44 52.5 11 "
26.40382 23 57 41.72 +27 50 03.9 Belmas
26.81968 23 57 54.62 +27 51 27.4 McNaught
T. Seki (Geisei).
J. Belmas (Victoria). Communicated by J. Tatum.
R. H. McNaught (Siding Spring). Uppsala Schmidt telescope. Well
condensed.
Elements by Dan Green, CBAT:
T 1990 Nov 10.7900 E.T. w 248.18000 )
e 1.00000000 O 143.36000 ) 1950.0
q 0.9370000 A.U. i 129.28000 )
Source: IAUC 5023 Positions are geocentric
Ephemeris for 1990c by Hurst based on a program by N.James:
m = 3.0 + 5.0 log R + 10.0 log r
Date R.A. (1950) Dec. R r Elong Mag. Motion
h m o ' (AU) (AU) o "/hr P.A.
1990 May
27.00 23 58.00 +27 51.7 3.123 2.716 57.5 9.8 19 65
28.00 23 58.52 +27 54.8 3.097 2.705 58.2 9.8 19 65
29.00 23 59.02 +27 58.0 3.072 2.693 58.9 9.7 18 65
30.00 23 59.52 +28 1.1 3.046 2.681 59.7 9.7 18 64
31.00 00 00.00 +28 4.3 3.020 2.669 60.4 9.7 18 63
1990 June
1.00 0 0.47 +28 7.4 2.994 2.657 61.1 9.6 17 63
2.00 0 0.93 +28 10.6 2.968 2.645 61.8 9.6 17 62
3.00 0 1.37 +28 13.7 2.942 2.633 62.5 9.5 17 62
4.00 0 1.81 +28 16.9 2.915 2.620 63.3 9.5 16 61
5.00 0 2.23 +28 20.0 2.888 2.608 64.0 9.5 16 60
6.00 0 2.64 +28 23.1 2.861 2.596 64.8 9.4 15 60
7.00 0 3.03 +28 26.2 2.834 2.584 65.5 9.4 15 59
8.00 0 3.41 +28 29.3 2.807 2.572 66.2 9.3 15 58
9.00 0 3.78 +28 32.4 2.780 2.560 67.0 9.3 14 57
10.00 0 4.13 +28 35.5 2.753 2.548 67.8 9.3 14 56
11.00 0 4.47 +28 38.5 2.725 2.536 68.5 9.2 13 55
12.00 0 4.78 +28 41.5 2.697 2.524 69.3 9.2 13 54
13.00 0 5.09 +28 44.5 2.669 2.512 70.1 9.1 12 53
14.00 0 5.37 +28 47.5 2.641 2.499 70.8 9.1 12 51
15.00 0 5.64 +28 50.4 2.613 2.487 71.6 9.0 11 49
16.00 0 5.89 +28 53.3 2.585 2.475 72.4 9.0 11 48
17.00 0 6.12 +28 56.1 2.557 2.463 73.2 9.0 10 46
18.00 0 6.33 +28 58.9 2.528 2.451 74.0 8.9 10 43
19.00 0 6.52 +29 1.7 2.500 2.438 74.8 8.9 9 41
20.00 0 6.69 +29 4.4 2.471 2.426 75.6 8.8 9 38
21.00 0 6.84 +29 7.1 2.442 2.414 76.4 8.8 8 34
22.00 0 6.96 +29 9.7 2.413 2.402 77.2 8.7 7 30
23.00 0 7.06 +29 12.2 2.384 2.389 78.0 8.7 7 25
SUPERNOVA 1990K IN NGC 150
R. Evans, Hazelbrook, N.S.W., reports his discovery on May 25.8 UT
of a supernova in NGC 150 (R.A. = 0h31m.8, Decl. = -28 05',equinox
1950.0). K. Cooper and E. Sadler, Anglo-Australian Observatory,
measured the offset of the supernova from the galaxy centre as 18"
west and 26" north. The object (mag about 14) is situated in a
spiral arm of the galaxy; nothing appears at this position on the
ESO B survey photograph.
IAUC 5022
Guy M Hurst