Central Bureau for Astronomical Telegrams
IAUC 2901: 1976 AA (FMO HELIN)
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Read IAUC 2902
Circular No. 2901
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cable Address: SATELLITES, NEWYORK
Western Union: RAPID SATELLITE CAMBMASS
1976 AA (FAST-MOVING OBJECT HELIN)
The following precise positions have been reported:
1976 UT R. A. (1950) Decl. Mag. Observer
Jan. 7.33750 6 54 55.83 +15 10 18.2 Helin
7.36806 6 54 45.60 +15 14 11.3 "
8.13889 6 50 34.84 +16 57 38.6 "
8.33750 6 49 23.45 +17 24 45.9 "
8.49792 6 48 25.59 +17 46 26.5 "
9.18542 6 44 32.43 +19 21 12.3 "
9.33750 6 43 35.04 +19 42 20.6 "
9.48264 6 42 39.84 +20 02 21.2 "
10.70556 6 35 10.12 +22 53 54.8 14 Urata
10.70868 6 35 08.84 +22 54 22.0 "
E. Helin (Palomar Mountain Observatory). Measurer: S. J. Bus.
T. Urata (Nihondaira Observatory). Communicated by K. Osawa.
The following orbital elements, by B. G. Marsden, show that,
like 1975 YA, this object has an orbit smaller than that of the
earth; the aphelion distance is 1.15 AU. J. G. Williams, Jet
Propulsion Laboratory, reports very similar results.
T = 1976 May 20.09 ET
Peri. = 147.67 e = 0.1848
Node = 108.07 1950.0 a = 0.9675 AU
Incl. = 19.38 n = 1.036
q = 0.7888 AU P = 0.95 year
1976 ET R. A. (1950) Decl. Delta r Mag.
Jan. 13 6 20.09 +28 18.1
15 6 05.81 +32 54.4 0.126 1.100 14.2
17 5 50.64 +37 17.2
19 5 34.72 +41 20.1 0.131 1.092 14.5
21 5 18.23 +44 59.2
23 5 01.40 +48 12.5 0.141 1.083 14.9
25 4 44.47 +51 00.2
27 4 27.70 +53 23.6 0.154 1.074 15.3
29 4 11.32 +55 25.0
Mag. = 18.0 + 5 log Delta + 5 log r + 0.023 (phase angle)
1976 January 13 (2901) Brian G. Marsden
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