THE ASTRONOMER Electronic Circular No 412 1990 May 17 16.35UT
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 CERNIS-KUICHI-NAKAMURA (1990b)
Revised elements and ephemeris:
T 1990 Mar 17.3280 E.T. w 100.62400 )
e 1.00000000 O 347.75100 ) 1950.0
q 1.0682600 A.U. i 48.13500 ) (MPC 16378)
m = 9.0 + 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
18.00 8 9.31 +31 38.3 1.629 1.460 62.0 11.7 150 130
19.00 8 12.85 +30 59.6 1.645 1.470 61.9 11.8 148 131
20.00 8 16.31 +30 21.2 1.661 1.481 61.8 11.8 146 131
21.00 8 19.69 +29 43.2 1.677 1.491 61.6 11.9 144 131
22.00 8 22.99 +29 5.5 1.693 1.502 61.5 11.9 142 131
23.00 8 26.21 +28 28.2 1.710 1.513 61.3 12.0 140 131
24.00 8 29.36 +27 51.4 1.727 1.523 61.2 12.0 138 132
25.00 8 32.44 +27 14.9 1.743 1.534 61.0 12.1 136 132
26.00 8 35.45 +26 38.8 1.761 1.545 60.8 12.1 134 132
27.00 8 38.40 +26 3.1 1.778 1.556 60.6 12.2 133 132
28.00 8 41.29 +25 27.8 1.796 1.567 60.4 12.2 131 132
29.00 8 44.12 +24 53.0 1.813 1.578 60.2 12.3 129 132
30.00 8 46.90 +24 18.5 1.831 1.589 60.0 12.3 127 132
31.00 8 49.62 +23 44.5 1.849 1.600 59.8 12.4 125 132
COMET AUSTIN (1989c1)
Hopefully observers now have the delayed April TA but the ephemeris
for June is given below from the TA May issue:
m = 8.0 + 5.0 log R + 7.5 log r
Date R.A. (1950) Dec. R r Elong Mag. Motion
h m o ' (AU) (AU) o "/hr P.A.
1990 June
1.00 18 7.76 -17 6.1 0.278 1.275 157.0 6.0 586 235
2.00 17 54.77 -19 12.3 0.291 1.293 161.4 6.2 539 236
3.00 17 42.57 -21 4.8 0.305 1.311 165.5 6.3 492 237
4.00 17 31.18 -22 44.3 0.319 1.330 169.2 6.5 448 238
5.00 17 20.57 -24 12.0 0.335 1.348 172.4 6.6 408 239
6.00 17 10.71 -25 29.1 0.352 1.366 174.9 6.7 370 241
7.00 17 1.58 -26 36.8 0.369 1.384 175.9 6.9 336 242
8.00 16 53.13 -27 36.2 0.388 1.401 174.8 7.0 305 243
9.00 16 45.32 -28 28.5 0.406 1.419 172.8 7.2 277 244
10.00 16 38.11 -29 14.4 0.426 1.437 170.6 7.3 252 245
11.00 16 31.45 -29 54.9 0.446 1.454 168.4 7.5 229 245
12.00 16 25.31 -30 30.6 0.466 1.472 166.2 7.6 209 246
13.00 16 19.64 -31 2.2 0.487 1.490 164.1 7.7 191 247
14.00 16 14.41 -31 30.2 0.508 1.507 162.2 7.9 174 248
15.00 16 9.58 -31 55.1 0.529 1.524 160.3 8.0 160 248
16.00 16 5.12 -32 17.3 0.551 1.542 158.4 8.1 146 249
17.00 16 1.01 -32 37.1 0.573 1.559 156.7 8.2 134 249
18.00 15 57.21 -32 54.8 0.595 1.576 155.0 8.4 123 250
19.00 15 53.70 -33 10.7 0.618 1.593 153.4 8.5 113 250
20.00 15 50.46 -33 25.1 0.641 1.610 151.9 8.6 104 251
21.00 15 47.47 -33 38.0 0.664 1.627 150.4 8.7 95 251
22.00 15 44.71 -33 49.7 0.687 1.644 148.9 8.8 87 251
23.00 15 42.17 -34 0.4 0.711 1.661 147.5 8.9 80 252
24.00 15 39.82 -34 10.1 0.735 1.677 146.2 9.0 74 252
25.00 15 37.66 -34 18.9 0.759 1.694 144.8 9.1 68 252
26.00 15 35.67 -34 27.0 0.783 1.711 143.6 9.2 62 252
27.00 15 33.84 -34 34.4 0.807 1.727 142.3 9.3 57 252
28.00 15 32.16 -34 41.3 0.832 1.744 141.1 9.4 52 252
29.00 15 30.62 -34 47.6 0.856 1.760 139.9 9.5 48 251
30.00 15 29.21 -34 53.5 0.881 1.776 138.7 9.6 44 251
Guy M Hurst