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IAUC 4520: 1987u; 1987p; 1987f1; QU Vul

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                                                  Circular No. 4520
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


COMET RUDENKO (1987u)
     Ephemeris from the orbital elements on MPC 12446:

     1987/88 ET   R.A. (1950) Decl.     Delta      r       m1
     Dec. 31     2 49.47    -65 29.5    1.523    1.686    11.7
     Jan. 10     2 20.27    -59 41.1
          20     2 08.91    -54 49.3    2.007    1.981    13.0
          30     2 05.85    -50 49.9
     Feb.  9     2 07.23    -47 33.8    2.482    2.263    14.0
          19     2 11.28    -44 52.6
          29     2 17.04    -42 40.6    2.915    2.535    14.9

     Total visual magnitude estimate by A. Hale, Las Cruces, NM
(0.20-m reflector): Nov. 21.53, 8.1: (low altitude, twilight).


PERIODIC COMET BORRELLY (1987p)
     Total magnitudes: Dec. 14.46 UT, 7.5 (G. Garradd, Tamworth,
N.S.W., 7 x 50 binoculars; correction to IAUC 4512); 16.54, 7.8
(Y. Sugiyama, Hiratsuka, Japan, 0.16-m reflector); 19.08, 7.2 (E.
Jacobson, Evansville, MN, 10 x 50 binoculars); 20.77, 7.2 (A.
Boattini, Piazzano, Italy, 0.33-m reflector); 22.17, 6.8 (C. S.
Morris, Whitaker Peak, CA, 10 x 50 binoculars); 23.82, 7.8 (P.
Schmeer, Bischmisheim, West Germany, 20 x 80 binoculars).


COMET FURUYAMA (1987f1)
     Total magnitudes: Dec. 8.89 UT, 11.2 (S. Korth, Monheim, West
Germany, 0.36-m reflector); 10.18, 10.1 (A. Hale, Las Cruces, NM,
0.41-m reflector); 11.95, 10.3 (M. V. Zanotta, near Como, Italy,
0.41-m reflector); 13.15, 9.7 (C. E. Spratt, Victoria, BC, 0.20-m
reflector); 15.11, 9.9 (Spratt); 17.11, 10.0 (Spratt); 19.08, 9.2
(E. Jacobson, Evansville, MN, 0.13-m reflector); 20.72, 10.1 (A.
Boattini, Piazzano, Italy, 0.33-m reflector); 22.20, 9.8 (C. S.
Morris, Whitaker Peak, CA, 0.26-m reflector).


QU VULPECULAE
     Visual magnitude estimates: Oct. 17.85, 12.4 (S. Korth, Monheim,
West Germany; correction to IAUC 4498); Dec. 11.74, 13.1 (M.
Verdenet, Bourbon-Lancy, France).


1987 December 27               (4520)              Brian G. Marsden

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