Central Bureau for Astronomical Telegrams
IAUC 2757: 1975c
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Circular No. 2757
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
PERIODIC COMET KOHOUTEK (1975c)
The following precise positions have been measured by C. Y.
Shao from plates taken by J. H. Bulger and R. E. McCrosky with the
155-cm reflector at Harvard Observatory's Agassiz Station:
1975 UT R. A. (1950) Decl. Observer
Mar. 5.08098 4 48 27.63 +20 22 06.2 Bulger
6.07608 4 51 09.56 +20 23 29.3 McCrosky
The following elliptical elements, by B. G. Marsden, satisfy
the five observations within 2". It is possible that e (and hence
a and P) is slightly larger than given here, in which case there
could have been a very close approach to Jupiter in Apr.-June 1972.
T = 1975 Jan. 16.963 ET
Peri. = 168.974 e = 0.50008
Node = 273.581 1950.0 a = 3.10795 AU
Incl. = 5.389 n = 0.179884
q = 1.55372 AU P = 5.479 years
1974/75 ET R. A. (1950) Decl. Delta r m1
Sept.10 2 12.04 +22 39.7 1.180 1.964 15.3
20 2 17.01 +23 41.6
30 2 19.21 +24 26.9 0.955 1.862 14.6
Oct. 10 2 18.41 +24 50.5
20 2 14.77 +24 47.3 0.794 1.770 14.0
30 2 09.18 +24 14.8
Nov. 9 2 03.19 +23 15.8 0.710 1.689 13.5
19 1 58.67 +21 59.4
29 1 57.39 +20 40.1 0.703 1.624 13.3
Dec. 9 2 00.36 +19 31.4
19 2 07.92 +18 42.3 0.758 1.579 13.4
Feb. 27 4 32.08 +20 11.2
Mar. 9 4 59.14 +20 27.2 1.323 1.630 14.7
19 5 26.48 +20 31.9
29 5 53.79 +20 23.9 1.533 1.697 15.2
Apr. 8 6 20.77 +20 02.4
18 6 47.25 +19 27.5 1.768 1.779 15.7
m1 = 12.0 + 5 log Delta + 10 log r
1975 March 7 (2757) Brian G. Marsden
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