Central Bureau for Astronomical Telegrams
IAUC 3265: 1978 RA = 1975 TB
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Read IAUC 3266
Circular No. 3265
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM Telephone 617-864-5758
1978 RA = 1975 TB
The following precise positions have been measured by S. J.
Bus and R. Weeks from exposures by E. Helin and Bus (assisted by
Weeks and J. Faulkner) with the Palomar 46-cm Schmidt telescope:
1978 UT R. A. (1950) Decl.
Sept.10.40348 23 16 45.48 + 0 52 18.0
10.41667 23 16 41.62 + 0 51 05.2
11.16962 23 13 05.32 - 0 19 37.4
11.17848 23 13 02.60 - 0 20 28.8
11.31736 23 12 19.98 - 0 33 32.8
11.32465 23 12 17.95 - 0 34 14.7
11.40348 23 11 53.44 - 0 41 38.3
11.48577 23 11 28.40 - 0 49 25.3
12.16007 23 08 15.11 - 1 53 03.5
12.40348 23 07 00.40 - 2 16 02.7
12.46285 23 06 42.17 - 2 21 40.8
J. G. Williams, Jet Propulsion Laboratory, finds that 1978 RA
is identical with 1975 TB, a probable Apollo object observed on
only two nights (IAUC 2874, 2886). The following elements, by the
undersigned, link the 1975 and 1978 observations:
T = 1979 Jan. 24.9376 ET Epoch = 1978 Oct. 19.0 ET
Peri. = 355.8699 e = 0.436476
Node = 170.3359 1950.0 a = 0.832007 AU
Incl. = 15.7517 n = 1.298713
q = 0.468856 AU P = 0.759 year
1978 ET R. A. (1950) Decl. Delta r B
Sept.13 23 04.13 - 3 11.9 0.188 1.194 13.8
15 22 54.40 - 6 19.6
17 22 44.80 - 9 23.1 0.192 1.192 14.1
19 22 35.43 -12 19.4
21 22 26.40 -15 06.4 0.200 1.188 14.4
23 22 17.76 -17 42.2
25 22 09.60 -20 06.0 0.211 1.183 14.7
27 22 01.97 -22 17.5
29 21 54.89 -24 16.6 0.226 1.176 15.0
Oct. 1 21 48.38 -26 04.0
3 21 42.47 -27 40.4 0.244 1.168 15.2
1978 September 14 (3265) Brian G. Marsden
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