Central Bureau for Astronomical Telegrams
IAUC 5150: 1990 XJ
The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).
Read IAUC 5151
Circular No. 5150
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
1990 XJ
The following additional precise positions have been reported:
1990 UT R.A. (1950) Decl. Observer
Dec. 17.93719 2 06 37.98 +23 42 46.8 McCrosky
17.93877 2 06 38.13 +23 42 39.7 "
18.13715 2 06 58.80 +23 31 36.6 Helin
18.16085 2 07 01.22 +23 30 16.0 "
18.46308 2 07 33.09 +23 13 40.6 McNaught
18.46841 2 07 33.39 +23 13 26.6 "
19.21997 2 08 52.81 +22 32 03.4 Helin
19.24340 2 08 55.10 +22 30 47.6 "
20.03174 2 10 18.51 +21 48 43.9 McCrosky
20.03458 2 10 18.79 +21 48 34.7 "
R. E. McCrosky and C.-Y. Shao (Oak Ridge). 1.5-m reflector.
E. Helin, K. Lawrence, and P. Rose (Palomar). 0.46-m Schmidt.
R. H. McNaught (Siding Spring). Uppsala Southern Schmidt.
Orbital elements by B. G. Marsden, Center for Astrophysics:
T = 1990 Sept. 1.494 ET Peri. = 94.463
e = 0.20868 Node = 254.605 1950.0
q = 1.21041 AU Incl. = 34.348
a = 1.52960 AU n = 0.520999 P = 1.89 years
1990/91 R.A. (1950) Decl. Delta r V
Dec. 25 2 18.92 +17 48.5 0.605 1.425 16.1
30 2 27.48 +14 26.4
Jan. 4 2 35.96 +11 39.7 0.709 1.455 16.6
9 2 44.41 + 9 23.2
14 2 52.88 + 7 32.4 0.824 1.485 17.0
19 3 01.38 + 6 02.9
24 3 09.95 + 4 51.0 0.948 1.514 17.3
29 3 18.60 + 3 53.6
Feb. 3 3 27.31 + 3 08.0 1.075 1.543 17.7
8 3 36.12 + 2 32.0
13 3 45.02 + 2 04.0 1.202 1.572 17.9
1990 December 26 (5150) Daniel W. E. Green
Read IAUC 5151
Our Web policy. Index to the CBAT/MPC/ICQ pages.
