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iau5397.txt
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1995-05-02
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Circular No. 5397
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
PERIODIC COMET SHOEMAKER-LEVY 7 (1991d1)
The following additional positions have been reported:
1991 UT R.A. (1950) Decl. m1 Observer
Nov. 28.50139 3 25 12.83 +42 32 07.5 17 Seki
28.63888 3 25 10.67 +42 30 48.3 "
Dec. 5.15394 3 24 43.69 +41 22 19.1 McCrosky
5.17341 3 24 43.55 +41 22 06.7 "
T. Seki (Geisei). Communicated by S. Nakano.
R. E. McCrosky (Oak Ridge). 1.55-m reflector + CCD.
Orbital elements by B. G. Marsden, Harvard-Smithsonian Center
for Astrophysics, from seven observations, Nov. 13-Dec. 5:
T = 1991 Oct. 27.3096 ET Peri. = 91.7535
e = 0.542469 Node = 312.3191 1950.0
q = 1.628858 AU Incl. = 10.2625
a = 3.560102 AU n = 0.1467271 P = 6.717 years
1991 ET R.A. (1950) Decl. Delta r m1
Nov. 30 3 25.00 +42 17.5 0.712 1.663 16.6
Dec. 5 3 24.73 +41 24.1
10 3 25.21 +40 24.9 0.747 1.685 16.8
15 3 26.56 +39 22.3
20 3 28.80 +38 18.5 0.801 1.713 17.0
25 3 31.93 +37 15.3
30 3 35.89 +36 14.1 0.872 1.745 17.3
PERIODIC COMET SHOEMAKER-LEVY 6 (1991b1)
Total visual magnitude estimates (cf. IAUC 5386): Nov. 14.29
UT, 11.4 (A. Hale, Tucumcari, NM, 0.20-m reflector); 25.11, 11.8
(Hale, Las Cruces, NM, 0.41-m reflector); 29.98, 12.4 (A. Boattini,
Monte Morello, Italy, 0.20-m reflector); Dec. 3.85, 12.8 (H. Mikuz,
Ljubljana, Yugoslavia, 0.20-m reflector).
1991 December 5 Daniel W. E. Green