Central Bureau for Astronomical Telegrams
IAUC 4705: 1989 AC
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Read IAUC 4706
Circular No. 4705
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
1989 AC
The following precise positions have been reported:
1989 UT R.A. (1950) Decl. Observer
Jan. 3.21615 3 16 16.02 +16 15 35.2 Helin
3.22101 3 16 18.57 +16 15 47.9 "
6.09305 3 50 57.97 +18 35 21.1 McCrosky
7.11250 4 01 53.44 +19 13 53.9 Helin
7.11944 4 01 57.13 +19 14 05.4 "
7.23576 4 03 07.16 +19 18 10.9 "
7.24271 4 03 11.23 +19 18 24.2 "
E. Helin, R. Helin, B. Roman and R. Crockett (Pakomar).
R. E. McCrosky (Oak Ridge Observatory). Mid-point measurement by
C.-Y. Shao of very poor trail mentioned on IAUC 4702.
Improved orbital elements from six observations Jan. 3-7:
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. 8 4 10.77 +19 43.5 0.161 1.107 13.6
9 4 20.21 +20 12.6
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
1989 January 8 (4705) Brian G. Marsden
Read IAUC 4706
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