Central Bureau for Astronomical Telegrams
IAUC 4163: 1985 PA; 1985p; 1984e
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Read IAUC 4164
Circular No. 4163
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM Telephone 617-495-7244/7440/7444
1985 PA
Ephemeris continuation (cf. IAUC 4120) from the orbital
elements on MPC 10302:
1986 ET R.A. (1950.0) Decl. p r Mag.
Jan. 30 1 47.70 -55 22.3 0.788 0.992 17.5
Feb. 4 2 11.85 -51 38.8
9 2 35.31 -46 59.1 0.678 0.990 17.2
14 2 57.98 -41 13.2
19 3 19.83 -34 12.8 0.582 0.998 17.0
24 3 40.86 -25 55.6
Mar. 1 4 01.15 -16 31.3 0.524 1.014 16.8
6 4 20.79 - 6 26.1
11 4 39.92 + 3 40.7 0.525 1.039 16.8
16 4 58.68 +13 09.6
21 5 17.17 +21 33.9 0.587 1.069 17.0
26 5 35.52 +28 43.5
31 5 53.83 +34 40.5 0.690 1.105 17.4
PERIODIC COMET CIFFREO (1985p)
Ephemeris continuation (cf. IAUC 4145) from the orbital
elements on MPC 10297:
1986 ET R.A. (1950.0) Decl. p r m1
Jan. 30 4 25.45 +36 20.1 1.223 1.917 13.3
Feb. 9 4 39.18 +36 39.8
19 4 55.25 +36 51.5 1.487 2.007 13.9
Mar. 1 5 13.08 +36 54.9
11 5 32.18 +36 49.7 1.781 2.107 14.5
21 5 52.17 +36 35.7
31 6 12.66 +36 12.7 2.094 2.213 15.1
PERIODIC COMET GIACOBINI-ZINNER (1984e)
Total visual magnitude estimates: 1985 Aug. 27.43 UT, 7.3
C. S. Morris, Lockwood Valley, CA, 20 x 80 binoculars; correction
to IAUC 4114); Sept. 24.11, 8.6 (J.-C. Merlin, Le Creusot, France,
0.40-m reflector); Oct. 8.36, 10.0 (J. Bortle, Stormville, NY,
0.32-m reflector); 26.00, 10.0 (Merlin); Nov. 9.73, 11.2 (M. Clark,
Langford, W. Australia, 0.41-m reflector); 16.76, 11.7 (Clark).
1986 January 16 (4163) Brian G. Marsden
Read IAUC 4164
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