Central Bureau for Astronomical Telegrams
IAUC 2968: 1975h; JUPITER XIII (LEDA)
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Read IAUC 2969
Circular No. 2968
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
COMET KOBAYASHI-BERGER-MILON (1975h)
Further precise positions have been reported as follows:
1975 UT R. A. (1950) Decl. Observer
July 15.66354 20 37 30.14 +22 00 29.3 P. Jekabsons
15.67049 20 37 25.35 +22 02 08.3 "
27.00069 15 56 44.10 +58 46 53.0 de Vegt
27.00947 15 56 27.17 +58 47 03.0 "
28.90096 15 00 07.04 +58 34 35.0 "
28.90614 14 59 58.67 +58 34 26.9 "
29.95880 14 33 40.44 +57 55 58.2 "
29.96434 14 33 32.44 +57 55 42.7 "
Aug. 1.92447 13 37 33.96 +55 15 15.5 "
1.93763 13 37 21.94 +55 14 26.1 "
2.89375 13 23 50.92 +54 16 59.5 "
2.89832 13 23 47.27 +54 16 42.3 "
3.88922 13 11 32.47 +53 17 21.0 "
3.89337 13 11 29.37 +53 17 05.0 "
4.90177 13 00 34.08 +52 17 52.4 "
4.91771 13 00 24.34 +52 16 55.5 "
5.90937 12 50 55.60 +51 20 27.3 "
5.91771 12 50 51.02 +51 19 59.3 "
6.88785 12 42 35.15 +50 26 43.0 "
6.89479 12 42 31.82 +50 26 20.8 "
7.89965 12 34 50.38 +49 33 16.2 "
9.88854 12 21 40.44 +47 54 29.6 "
9.89410 12 21 38.36 +47 54 13.0 "
10.88993 12 15 51.68 +47 07 39.6 "
10.89618 12 15 49.63 +47 07 21.5 "
11.88021 12 10 32.51 +46 23 03.4 "
11.88646 12 10 30.61 +46 22 46.2 "
Sept.28.87222 10 27 48.95 + 0 49 03.5 Candy
28.87500 10 27 48.96 + 0 48 53.6 "
Oct. 1.86562 10 28 15.54 - 2 23 51.2 P. Jekabsons
12.85764 10 31 16.38 -13 32 19.8 Candy
12.86042 10 31 16.40 -13 32 29.4 "
24.84097 10 34 47.86 -24 40 39.2 C. Jekabsons
24.84375 10 34 48.06 -24 40 49.1 "
29.84097 10 35 49.24 -29 03 33.1 P. Jekabsons
29.84479 10 35 49.38 -29 03 43.2 "
Nov. 6.84028 10 36 23.41 -35 45 54.2 "
6.84514 10 36 23.40 -35 46 10.3 "
16.80627 10 34 23.56 -43 35 03.1 Candy
16.81113 10 34 23.07 -43 35 14.1 "
P. Jekabsons, M. P. Candy, D. Harwood and C. Jekabsons (Perth
Observatory, Bickley). 25-cm astrograph.
C. de Vegt, K. U. Gehlich and T. Kleine (Hamburg Observatory,
Bergedorf). 30-cm astrograph.
JUPITER XIII (LEDA)
The following improved jovicentric elements (referred to the
ecliptic), by K. Aksnes, Center for Astrophysics, satisfy 15 observations
1974 Sept. 11 to 1975 Oct. 8 with a mean residual of 0".79:
T = 1974 June 22.7309 ET Epoch = 1974 Sept. 10.0 ET
Peri. = 217.7900 e = 0.147797
Node = 248.3393 1950.0 a = 0.074159 AU
Incl. = 26.7012 n = 1.50802
q = 0.063199 AU P = 238.7 days
In the following ephemeris dR.A. and dDecl. are the satellite's offsets
from Jupiter. The photographic magnitude of Jupiter XIII is 21.
1976/77 ET R. A. (1950) Decl. dR.A. dDecl. Delta r
July 21 3 35.69 +17 57.0 +2m65 -11'4 5.334 0.071
31 3 41.69 +18 17.9 +2.30 -11.3 5.179 0.074
Aug. 10 3 46.68 +18 36.0 +1.80 -10.1 5.020 0.077
20 3 50.54 +18 51.2 +1.16 - 8.0 4.859 0.079
30 3 53.16 +19 03.2 +0.40 - 5.1 4.701 0.081
Sept. 9 3 54.45 +19 11.8 -0.45 - 1.7 4.550 0.083
19 3 54.35 +19 16.6 -1.35 + 1.9 4.410 0.084
29 3 52.86 +19 17.4 -2.27 + 5.6 4.284 0.085
Oct. 9 3 50.03 +19 14.0 -3.14 + 9.0 4.178 0.086
19 3 46.05 +19 06.4 -3.89 +11.9 4.096 0.086
29 3 41.16 +18 54.9 -4.45 +14.2 4.042 0.085
Nov. 8 3 35.75 +18 40.0 -4.75 +15.7 4.017 0.083
18 3 30.23 +18 22.9 -4.74 +16.4 4.024 0.081
28 3 25.05 +18 04.8 -4.40 +16.4 4.062 0.079
Dec. 8 3 20.61 +17 47.5 -3.75 +15.6 4.129 0.076
18 3 17.24 +17 32.2 -2.83 +14.0 4.222 0.073
28 3 15.14 +17 20.3 -1.74 +11.6 4.335 0.070
Jan. 7 3 14.40 +17 12.6 -0.58 + 8.5 4.464 0.067
17 3 15.00 +17 09.7 +0.56 + 4.7 4.604 0.065
27 3 16.86 +17 11.8 +1.55 + 0.6 4.748 0.063
Feb. 6 3 19.82 +17 19.0 +2.31 - 3.4 4.894 0.063
16 3 23.74 +17 31.2 +2.78 - 6.9 5.037 0.064
26 3 28.53 +17 48.1 +2.96 - 9.5 5.177 0.065
Mar. 8 3 34.08 +18 09.1 +2.89 -11.0 5.311 0.068
18 3 40.32 +18 33.5 +2.61 -11.3 5.438 0.071
1976 July 2 (2968) Brian G. Marsden
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