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IAUC 4524: 1987b1; 1987f1; N Vul 1987

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                                                  Circular No. 4524
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 McNAUGHT (1987b1)
     Total visual magnitude estimates: 1987 Dec. 28.54 UT, 7.5:
(A. Hale, Las Cruces, NM, 0.20-m reflector; twilight, low
altitude); 30.27, 6.5 (J. D. Shanklin, Cambridge, England, 20 x 80
binoculars); 31.54, 7.5 (Hale, 0.20-m reflector; twilight; with
0.41-m reflector, 15' tail in p.a. 345 ).


COMET FURUYAMA (1987f1)
     Improved parabolic orbital elements from MPC 12710:

         T = 1988 Mar. 3.0651 ET     W = 233.6255
                                     O = 250.0571   1950.0
         q =   1.679678 AU           i = 117.7854

     1987/88 ET   R.A. (1950) Decl.     Delta      r       m1
     Dec. 31     2 31.80    - 7 44.7    1.258    1.873     9.7
     Jan. 10     2 08.63    -12 54.6
          20     1 53.45    -16 28.5    1.615    1.773    10.0
          30     1 44.22    -19 00.4
     Feb.  9     1 39.27    -20 55.0    1.966    1.707    10.3
          19     1 37.44    -22 28.6
          29     1 37.93    -23 52.3    2.233    1.680    10.5
     Mar. 10     1 40.16    -25 14.0
          20     1 43.77    -26 39.9    2.383    1.695    10.7
          30     1 48.50    -28 15.6
     Apr.  9     1 54.16    -30 06.5    2.410    1.749    10.8
          19     2 00.67    -32 18.4
          29     2 07.96    -34 58.0    2.328    1.839    11.0

     Total visual magnitude estimate by A. Hale, Las Cruces, NM
(0.41-m reflector): 1987 Dec. 28.23 UT, 10.0 (moonlight).


NOVA VULPECULAE 1987
     Photoelectric photometry by R. Monella, Covo, Italy: 1987
Dec. 23.716 UT, V = 8.11, B-V = +0.51, U-B = -0.96; 26.714, 8.27,
+0.46, -0.91; 27.719, 8.38, +0.45, -0.94.
     Visual magnitude estimates: 1987 Dec. 28.71 UT, 8.4 (S.
Baroni, Milan, Italy); 29.72, 8.7 (E. Schweitzer, Strasbourg,
France); 31.71, 8.7 (P. Schmeer, Bischmisheim, West Germany).


1988 January 1                 (4524)              Brian G. Marsden

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