THE ASTRONOMER Electronic Circular No 240 1989 Jan 11 19.40UT.
Telecom Gold 72:MAG60138
Ed:Guy M Hurst, 16, Westminster Close, Kempshott Rise, Basingstoke,
Hants, RG22 4PP, England. Telephone:(0256)471074.Int:+44256471074
Telex:265871(MONREF G) Quote"72:MAG60138 ATT G.HURST"in FIRST line.
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COMET YANAKA (1988r)
Improved parabolic elements from 21 observations Jan. 1-5:
T = 1988 Dec. 11.657 ET Peri. = 88.137
Node = 314.847 1950.0
q = 0.42790 AU Incl. = 70.973
1989 ET R.A. (1950) Decl. Delta r m1
Jan. 8 15 43.59 - 8 41.6
10 15 28.64 -11 54.2 0.416 0.831 9.8
12 15 11.59 -15 31.6
14 14 51.94 -19 31.8 0.369 0.905 9.9
16 14 29.15 -23 49.9
18 14 02.74 -28 15.8 0.339 0.979 10.1
20 13 32.43 -32 34.5
22 12 58.38 -36 27.6 0.332 1.053 10.3
24 12 21.46 -39 37.3
26 11 43.27 -41 51.7 0.349 1.125 10.7
28 11 05.84 -43 08.4 IAUC 4706
1989 AC
Improved orbital elements from six observations Jan. 3-7:(IAUC
4705)
T = 1988 Nov. 22.076 ET Peri. = 274.420
e = 0.61454 Node = 127.521 1950.0
q = 0.89965 AU Incl. = 0.450
a = 2.33396 AU n = 0.276416 P = 3.57 years
1989 ET R.A. (1950) Decl. Delta r V
Jan.10 4 29.04 +20 38.0 0.175 1.123 13.7
11 4 37.31 +21 00.1
12 4 45.06 +21 19.4 0.190 1.138 13.9
13 4 52.33 +21 36.1
14 4 59.14 +21 50.6 0.206 1.154 14.1
15 5 05.55 +22 03.3
16 5 11.57 +22 14.2 0.222 1.170 14.2
17 5 17.25 +22 23.8
18 5 22.60 +22 32.0 0.240 1.186 14.4
19 5 27.67 +22 39.2
20 5 32.46 +22 45.3 0.258 1.203 14.6
21 5 37.00 +22 50.7
22 5 41.32 +22 55.2 0.276 1.219 14.7
23 5 45.43 +22 59.1
24 5 49.35 +23 02.5 0.296 1.236 14.9
COMET BRADFIELD (1989c)
Ephemeris:
1989 ET R.A. (1950) Decl. Delta r m1
Jan.10 21 47.19 -54 32.5 1.401 0.943 11.5
12 22 06.02 -53 16.0
14 22 22.89 -51 53.2 1.470 1.017 11.9
16 22 37.99 -50 26.6
18 22 51.51 -48 58.1 1.546 1.091 12.3
20 23 03.66 -47 28.9
22 23 14.62 -46 00.2 1.627 1.164 12.7
24 23 24.55 -44 32.8 IAUC 4709
Guy M Hurst