Central Bureau for Astronomical Telegrams
IAUC 5325: 1991q; 1991n
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Read IAUC 5326
Circular No. 5325
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 LEVY (1991q)
Improved orbital elements by B. G. Marsden, Center for
Astrophysics, from 33 observations, June 15-Aug. 4 (from MPC 18597):
T = 1991 July 8.1929 ET Peri. = 41.4773
e = 0.928837 Node = 328.7229 1950.0
q = 0.982521 AU Incl. = 19.1845
a = 13.806596 AU n = 0.0192121 P = 51.301 years
1991 ET R.A. (1950) Decl. Delta r m1
Aug. 22 7 01.82 +36 38.2 1.672 1.226 10.0
27 7 19.41 +36 18.1
Sept. 1 7 35.74 +35 51.8 1.740 1.324 10.4
6 7 50.85 +35 21.2
11 8 04.79 +34 47.7 1.798 1.430 10.8
16 8 17.62 +34 12.5
21 8 29.40 +33 36.8 1.843 1.541 11.2
26 8 40.19 +33 01.3
Oct. 1 8 50.02 +32 26.7 1.875 1.655 11.6
6 8 58.95 +31 53.8
11 9 06.99 +31 23.0 1.893 1.770 11.9
16 9 14.16 +30 54.7
21 9 20.49 +30 29.4 1.899 1.886 12.1
26 9 25.98 +30 07.3
31 9 30.64 +29 48.6 1.893 2.002 12.4
Total visual magnitude estimates (L = reflector): Aug. 1.07 UT,
9.6 (H. Mikuz, Valun, Cres, Yugoslavia, 0.20-m L); 3.47, 9.2 (C. S.
Morris, Pine Mountain Club, CA, 20x80 binoculars); 6.34, 9.4 (J. E.
Bortle, Stormville, NY, 0.32-m L); 8.46, 9.1 (A. Hale, Las Cruces,
NM, 0.41-m L); 11.40, 9.1 (G. Kronk, Troy, IL, 0.33-m L); 12.36, 9.6
(Bortle); 13.01, 10.3 (B. H. Granslo, Fjellhamar, Norway, 0.20-m L).
PERIODIC COMET FAYE (1991n)
Total visual magnitude estimates: Aug. 11.39 UT, 12.5: (C. S.
Morris, Lockwood Valley, CA, 0.51-m reflector); 12.40, 12.7 (A.
Hale, Las Cruces, NM, 0.41-m reflector).
1991 August 15 (5325) Daniel W. E. Green
Read IAUC 5326
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