Central Bureau for Astronomical Telegrams
IAUC 2296: 1969c; P/DANIEL
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Circular No. 2296
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 WHIPPLE (1969c)
The following precise positions have been reported:
1970 UT R.A. (1950) Decl. m1 Observer
Oct. 22.59306 1 10 31.15 + 3 10 11.2 16 Seki
Nov. 23.80396 1 02 17.71 + 0 20 03.0 Mrkos
25.80638 1 02 30.08 + 0 16 38.0 "
26.75714 1 02 38.43 + 0 15 19.3 "
26.85402 1 02 38.98 + 0 15 14.2 "
27.84264 1 02 49.00 + 0 14 05.6 "
28.75312 1 02 58.10 + 0 13 12.8 "
T. Seki (Kochi Observatory).
A. Mrkos (Klet Observatory).
PERIODIC COMET DANIEL
The results below, by B. G. Marsden, are based on 26 observations
obtained at the four apparitions 1937-64. Perturbations by
all nine planets, as well as the influence of nongravitational
forces, were taken into account. The comet is even more badly
placed for observations than in 1964.
T = 1971 May 31.7337 ET Epoch = 1971 June 18.0 ET
Peri. = 10.8291 e = 0.548622
Node = 68.4832 1950.0 a = 3.700895 AU
Incl. = 20.1113 n = 0.1384344
q = 1.670504 AU P = 7.120 years
1971 TT R. A. (1950) Decl. Delta r For dT = +1d m2
Jan. 29 0 12.45 -12 05.3 2.510 2.038 -0m80 - 8'6 21.1
Feb. 8 0 29.58 - 8 55.9 -0.81 - 9.2
18 0 47.69 - 5 42.3 2.570 1.940 -0.83 - 9.9 20.9
28 1 06.76 - 2 25.3 -0.86 -10.4
Mar. 10 1 26.80 + 0 53.5 2.609 1.853 -0.89 -10.9 20.6
m2 = 14.5 + 5 log Delta + 15 log r
1970 December 29 (2296) Brian G. Marsden
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