THE ASTRONOMER Electronic Circular No 384 1990 Jan 31 18.47UT
Microlink:MAG60138 JANET:GMH at UK.AC.RO-GREENWICH.STARLINK
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke,
Hants, RG22 4PP, England. Telephone: (0256)471074 Int:+44256471074
Telex: 94082518 Answerback: TAGUY
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COMET WILD (1990a)
Further precise positions have been reported as follows:
1990 UT R.A. (1950) Decl. m1 Observer
Jan. 21.68750 9 34 42.81 +20 38 31.6 14.0 Niijima
21.71806 9 34 41.53 +20 38 39.9 "
25.46128 9 32 10.75 +20 52 56.4 14.0 Helin
25.48073 9 32 09.82 +20 52 58.8 "
T. Niijima and T. Urata (Ojima, Japan). 0.16-m hyperboloid
astrocamera. Measurer Urata. Prediscovery observations
communicated by H. Kosai.
E. Helin, B. Roman and K. Lawrence (Palomar). Measurer J. Alu.
The following parabolic orbital elements satisfy the above
observations very closely, but it is likely that the comet is of
short period:
T = 1990 July 16.08 ET Peri. = 212.03
Node = 9.40 1950.0
q = 1.3972 AU Incl. = 4.61
1990 ET R.A. (1950) Decl. Delta r m1
Jan. 9 9 40.66 +19 57.5 1.994 2.867 14.6
14 9 38.80 +20 12.1
19 9 36.31 +20 28.8 1.829 2.764 14.2
24 9 33.20 +20 47.3
29 9 29.51 +21 06.9 1.689 2.661 13.9
Feb. 3 9 25.31 +21 27.1
8 9 20.69 +21 46.9 1.576 2.559 13.6
13 9 15.77 +22 05.7
18 9 10.68 +22 22.6 1.492 2.456 13.3
Total visual magnitude estimates: Jan. 24.54 UT, 13.5 (A. Pearce,
Scarborough, Western Australia, 0.32-m reflector); 25.26, 12.8
(A. Hale, Las Cruces, NM, 0.41-m reflector). IAUC 4954
TA INDEX
We are delighted to welcome Brian Manning to our group who is
available on STARLINK/JANET with mailboxes:
BHVAD::BGWM and bgwm @ uk.ac.bham.sr.star respectively.
Since publication of the e-mail directory, Luigi Rossi has
rejoined the group and is available on MICROLINK with
mailbox MAG37184.
Patrick Schmeer advises that his mailbox is no longer available
after Jan 31st.
Guy M Hurst