Central Bureau for Astronomical Telegrams
IAUC 4776: 1989 JA
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Read IAUC 4777
Circular No. 4776
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 JA
E. Helin reports her discovery of an asteroidal object on films
taken by herself, B. Roman, D. Tracy, and R. Crockett with the 0.46-m
Palomar Schmidt telescope. The positions below were measured by Roman.
The May 1 images were rather weak.
1989 UT R.A. (1950) Decl. Mag.
May 1.29983 14 11 50.75 +21 31 11.7 16.0
1.32587 14 11 45.80 +21 31 11.8
3.26389 14 06 08.40 +21 28 43.8
3.28594 14 06 04.11 +21 28 42.2
4.22899 14 03 06.97 +21 25 36.5
4.25087 14 03 02.39 +21 25 30.5
The following preliminary orbital elements by C. M. Bardwell,
Center for Astrophysics, indicate that this is an Apollo-type object:
T = 1989 July 7.88 ET Peri. = 231.66
e = 0.5062 Node = 60.85 1950.0
q = 0.9093 AU Incl. = 15.73
a = 1.8417 AU n = 0.39435 P = 2.50 years
1989 ET R.A. (1950) Decl. Delta r V
Apr. 24 14 28.39 +21 05.2 0.311 1.275 15.5
29 14 17.80 +21 28.3
May 4 14 03.84 +21 26.6 0.236 1.202 14.9
9 13 45.64 +20 46.9
14 13 21.94 +19 09.6 0.170 1.132 14.4
19 12 50.73 +16 04.0
24 12 09.01 +10 43.1 0.117 1.067 13.9
29 11 13.33 + 2 14.8
June 3 10 02.98 - 8 57.2 0.091 1.010 14.3
8 8 45.47 -19 35.8
13 7 34.66 -26 23.3 0.112 0.963 16.0
18 6 39.29 -29 23.3
23 5 59.44 -30 05.0 0.162 0.929 17.0
1989 May 5 (4776) Daniel W. E. Green
Read IAUC 4777
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