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IAUC 4446: 1987 QA; 1987L

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IAUC number 

                                                  Circular No. 4446
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


1987 QA
     A. Maury reports the following semiaccurate positions of
another fast-moving asteroidal object, discovered by Jean Mueller
with the 1.2-m Schmidt in the course of Palomar Sky Survey II:

      1987 UT              R.A. (1950) Decl.           Mag.
      Aug. 23.43958      1 22 12.6      +11 20 24       17
           23.49167      1 22 19.5      +11 18 06
           26.47917      1 29 27.7      + 8 51 36
           26.49653      1 29 30.0      + 8 50 44
      Sept. 3.35833      1 50 49.2      + 0 01 11
            3.37917      1 50 52.9      - 0 00 30

     Orbital elements from the above six positions:

           T = 1987 Nov. 30.43 ET
           W = 278.75                    e =   0.4670
           O = 168.70   1950.0           a =   1.6456 AU
           i =  40.66                    n =   0.46687
           q =   0.8771 AU               P =   2.11 years

     1987 ET      R.A. (1950) Decl.     Delta      r       V
     Sept. 2     1 46.81    + 1 50.1    0.428    1.336    16.0
           7     2 02.37    - 5 30.2
          12     2 20.71    -14 45.4    0.340    1.265    15.5
          17     2 42.89    -25 40.9
          22     3 10.37    -37 19.7    0.308    1.195    15.4
          27     3 45.05    -48 14.8
     Oct.  2     4 28.92    -57 11.8    0.338    1.126    15.8


SUPERNOVA 1987L IN NGC 2336
     A. V. Filippenko and M. A. Strauss, University of California
at Berkeley, report: "SN 1987L is of type Ia, rather than type II
(cf. IAUC 4441).  The initial classification was based on a cursory
examination of an uncalibrated spectrum obtained on Aug. 21,
shortly before the information was transmitted to the Central
Bureau. Strong emission and absorption blends near the wavelengths
of H alpha, H beta and He I/Na D 589 nm were the cause of the error.  The
calibrated spectrum closely resembles those of other type Ia
supernovae roughly 1 month past maximum brightness."


1987 September 4               (4446)              Brian G. Marsden

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