Central Bureau for Astronomical Telegrams
IAUC 5171: 1991 AQ
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Read IAUC 5172
Circular No. 5171
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
1991 AQ
E. Helin reports her discovery of a fast-moving asteroidal
object, and the following positions are available:
1991 UT R.A. (1950) Decl. Mag. Observer
Jan. 14.39792 8 02 22.70 +36 02 19.3 15.5 Helin
14.42240 8 02 16.57 +36 03 44.3 "
15.38542 7 58 06.95 +37 04 04.9 "
19.12160 7 31 38.41 +42 32 50.3 Balam
19.13549 7 31 29.30 +42 34 28.1 "
E. Helin, K. Lawrence, P. Rose, R. Bambery (Palomar). 0.46-m Schmidt
telescope films. Measured by Lawrence.
D. Balam and J. Tatum (Victoria).
The following orbital elements by B. G. Marsden, Center for
Astrophysics, are necessarily uncertain:
T = 1991 Mar. 13.47 ET Peri. = 239.74
e = 0.7547 Node = 341.91 1950.0
q = 0.5048 AU Incl. = 3.14
a = 2.0575 AU n = 0.33397 P = 2.95 years
1991 ET R.A. (1950) Decl. Delta r V
Jan. 18 7 41.96 +40 34.5 0.135 1.112 14.3
19 7 32.85 +42 19.4
20 7 21.09 +44 22.1 0.111 1.085 14.0
21 7 05.46 +46 45.9
22 6 43.94 +49 32.6 0.089 1.059 13.7
23 6 13.16 +52 38.9
24 5 27.69 +55 45.6 0.069 1.032 13.5
25 4 21.11 +57 56.5
26 2 54.29 +57 21.8 0.056 1.004 13.6
27 1 26.36 +52 26.2
28 0 17.75 +43 53.6 0.053 0.977 14.5
29 23 30.65 +34 08.9
30 22 58.77 +25 08.3 0.062 0.950 16.4
31 22 36.52 +17 37.8
Feb. 1 22 20.36 +11 38.2 0.080 0.922 18.8
1991 January 19 (5171) Daniel W. E. Green
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