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IAUC 4483: 1987L; 1987s

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IAUC number 

                                                  Circular No. 4483
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


SUPERNOVA 1987L IN NGC 2336
     G. M. Hurst, Basingstoke, England, communicates the following
improved measurement for SN 1987L by B. Manning, Stakenbridge,
which replaces the erroneous result on IAUC 4445:   R.A. = 7h18m50.82,
Decl. = +80 15'26.2 (equinox 1950.0); offsets from galaxy center: 60".8
east, 67".8 south.


COMET BRADFIELD (1987s)
     Orbital elements from MPC 12440:

                      Epoch 1987 Nov. 21.0 ET
         T = 1987 Nov.  7.2739 ET    Peri. =  73.9085
         e =   0.994811              Node  = 267.3835   1950.0
         q =   0.868989 AU           i      =  34.0897

     1987 ET     R. A. (1950) Decl.     Delta      r       m1
     Nov. 17    18 35.06    + 7 36.2    0.973    0.887     4.9
          19    18 44.73    + 8 41.4
          21    18 54.75    + 9 47.4    0.938    0.905     4.9
          23    19 05.15    +10 54.1
          25    19 15.93    +12 01.2    0.906    0.928     5.0
          27    19 27.11    +13 08.5
          29    19 38.72    +14 15.6    0.879    0.955     5.0
     Dec.  1    19 50.74    +15 22.1
           3    20 03.18    +16 27.7    0.857    0.987     5.1
           5    20 16.04    +17 31.9
           7    20 29.30    +18 34.1    0.842    1.023     5.2
           9    20 42.92    +19 33.8
          11    20 56.88    +20 30.5    0.835    1.061     5.4
          13    21 11.12    +21 23.7
          15    21 25.58    +22 12.9    0.835    1.103     5.5
          17    21 40.20    +22 57.8
          19    21 54.90    +23 38.0    0.845    1.146     5.7
          21    22 09.61    +24 13.3

     Total visual magnitude estimates (B = binoculars):  Oct. 27.11
UT, 5.7 (C. Spratt, Victoria, BC, 11x80 B; 0.5-deg tail in p.a. 80 deg);
28.99, 5.8 (G. R. Chester, Arlington, VA, 7x50 B); 30.1, 5.5 (R.
Royer, Wrightwood, CA, 7x50 B); 31.96, 5.6 (D. W. E. Green,
Cambridge, MA, 20x80 B); Nov. 2.07, 5.9 (J. V. Scotti, Tucson, AZ,
7x50 B); 3.10, 5.7 (R. A. Keen, Mt. Thorodin, CO, 8x40 B).


1987 November 5                (4483)            Daniel W. E. Green

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