Central Bureau for Astronomical Telegrams
IAUC 3028: 1976 UA; 1975j; 1976j; 1975p
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Read IAUC 3029
Circular No. 3028
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 Telex: 921428
Telephone: (617) 864-5758
1976 UA
The following improved orbital elements, by B. G. Marsden, are
based on 31 observations 1976 Oct. 22 to Nov. 27. Perturbations by
all nine planets were taken into account.
T = 1976 Aug. 10.8416 ET Epoch = 1976 Oct. 29.0 ET
Peri. = 39.5777 e = 0.449832
Node = 211.2326 1950.0 a = 0.844007 AU
Incl. = 5.8517 n = 1.271116
q = 0.464345 AU P = 0.775 year
The object's closest approach to the earth (separation 0.00779 AU)
occurred on 1976 Oct. 20.7 UT. Although the object is so faint,
its orbit is quite well determined, and it can be expected that the
object will be recovered on its approaches within 0.178 AU in Jan.
1981 and 0.116 AU in Oct. 1983 (not 1982 as was indicated in some
publications); it will pass 0.029 AU from Mercury in June 1980.
COMET MORI-SATO-FUJIKAWA (1975j)
The following improved orbital elements were determined by the
undersigned from 177 observations 1975 Oct. 6 to 1976 Sept. 20,
perturbations by all nine planets being taken into account.
Epoch = 1975 Dec. 14.0 ET
T = 1975 Dec. 25.8774 ET Peri. = 246.2475
e = 0.997450 Node = 277.9800 1950.0
q = 1.603933 AU Incl. = 91.6061
1977 ET R. A. (1950) Decl. Delta r m2
Feb. 6 19 03.10 -25 22.7 5.738 4.936 19.2
16 19 08.41 -24 40.2
26 19 12.84 -23 58.7 5.690 5.114 19.4
Mar. 8 19 16.29 -23 18.2
18 19 18.65 -22 38.8 5.569 5.291 19.5
28 19 19.81 -22 00.6
Apr. 7 19 19.70 -21 23.8 5.406 5.467 19.5
17 19 18.25 -20 48.3
27 19 15.44 -20 14.2 5.239 5.640 19.6
May 7 19 11.28 -19 41.3
17 19 05.86 -19 09.7 5.111 5.812 19.7
27 18 59.34 -18 39.2
June 6 18 51.97 -18 09.7 5.068 5.983 19.8
16 18 44.04 -17 41.4
26 18 35.91 -17 14.4 5.143 6.152 19.9
July 6 18 27.93 -16 49.0
16 18 20.45 -16 25.4 5.351 6.319 20.1
26 18 13.76 -16 04.0
Aug. 5 18 08.07 -15 44.8 5.683 6.485 20.4
m2 = 8.5 + 5 log Delta + 10 log r
PERIODIC COMET DU TOIT-NEUJMIN-DELPORTE
The following predicted elements, by B. G. Marsden, were derived
by extending the 1970 prediction forward, perturbations by all nine
planets being taken into account. There is no possibility of
observing the comet at this return
T = 1977 Jan. 31.3759 ET Epoch = 1977 Jan. 17.0 ET
Peri. = 115.9120 e = 0.508457
Node = 187.7691 1950.0 a = 3.414703 AU
Incl. = 2.8639 n = 0.1561977
q = 1.678472 AU P = 6.310 years
PERIODIC COMET KLEMOLA (1976j)
The following precise positions have been reported:
1976 UT R. A. (1950) Decl. m1 Observer
Sept.16.54965 23 03 51.91 - 0 57 13.6 13 Suzuki
17.55556 23 03 58.52 - 1 11 06.0 13 "
19.24444 23 04 10.97 - 1 34 04.3 Roemer
19.23542 23 04 10.93 - 1 33 57.0 "
K. Suzuki (JCPM Oi Station). From Nihondaira Obs. Circ. No. 806.
E. Roemer and L. M. Vaughn (Steward Observatory, KItt Peak). 229-cm
reflector. Measurer: C. D. Vesely.
COMET BRADFIELD (1975p)
The following precise positions, obtained by L. V. Yurevich
and D. I. Gorodetsklj at Alma-Ata, are from Kiev Komet. Tsirk. No.
199. Measurers: K. I. Churyumov, Yurevich and L. A. Drach.
1976 UT R. A. (1950) Decl.
Jan. 31.63699 22 24 51.18 +36 47 39.0
31.64357 22 24 53.32 +36 47 57.9
Feb. 1.61941 22 31 17.26 +37 24 13.2
1.63309 22 31 22.14 +37 24 37.4
1977 January 17 (3028) Brian G. Marsden
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