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IAUC 4443: 1987u; Corrs

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IAUC number 

                                                  Circular No. 4443
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)
     The following precise positions have been reported:

     1987 UT             R.A. (1950) Decl.          Observer
     Aug. 22.14815    14 05 04.30    +33 39 29.0    Schwartz
          22.21875    14 04 50.47    +33 38 11.5    Gibson
          22.25104    14 04 44.29    +33 37 32.5      "
          24.03444    13 59 07.63    +33 03 04.8    Schwartz
          24.21597    13 58 34.15    +32 59 34.4    Balam
          25.24278    13 55 28.48    +32 39 39.9      "

G. Schwartz (Oak Ridge Observatory).  Measurer: C.-Y. Shao.
J. Gibson (Palomar).  0.46-m Schmidt telescope.
D. Balam (University of Victoria).  0.25-m reflector.

     Parabolic orbital elements from 8 observations Aug. 22-25:

           T = 1987 Oct. 9.41 ET     W = 142.12
                                     O = 298.34   1950.0
           q =   0.6211 AU           i = 115.12

     1987 ET      R.A. (1950) Decl.     Delta      r       m1
     Aug. 23    14 02.36    +33 23.1    1.290    1.146     9.6
          28    13 47.55    +31 46.8
     Sept. 2    13 34.33    +30 11.5    1.379    0.994     9.2
           7    13 22.19    +28 37.0
          12    13 10.71    +27 01.3    1.443    0.850     8.6
          17    12 59.52    +25 21.6
          22    12 48.35    +23 33.7    1.470    0.726     7.9

     Total visual magnitude estimates: Aug. 23.24 UT, 9.8 (C. S.
Morris, Lockwood Valley, CA, 20 x 80 binoculars); 24.20, 10.1 (C.
Spratt, Victoria, BC, 0.20-m reflector); 25.21, 9.9 (Spratt).


CORRIGENDA
IAUC 4437, 1987 PA, lines 1-2,  for  S. Singer Brewster  read
   J. Alu
IAUC 4440, Supernova 1987A in the Large Magellanic Cloud, line 2
   from end,  for  greater  read  smaller
IAUC 4441, Supernova 1987L in NGC 2336, line 4 from end,  for  Very
   strong  read strong;  for  FWHM < 11 000  read  FWHM about 11 000


1987 August 25                 (4443)              Brian G. Marsden

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