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IAUC 3329: 1979 BA; 2A 0311-227

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IAUC number 

                                                  Circular No. 3329
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 617-864-5758


1979 BA
     William Liller, Center for Astrophysics, reports the discovery
of a fast-moving object on exposures made at Cerro Tololo Interamerican
Observatory.  The plates have been measured by C.-Y. Shao:

     1979 UT             R. A. (1950) Decl.        Mag.
     Jan. 23.30312    10 58 41.29   + 1 47 51.6    17
          24.31528    10 58 21.47   + 2 37 11.6
          31.32535    10 54 41.55   + 8 47 07.3

     The following orbital elements, by the undersigned, suggest
that the object has an unusually high orbital inclination:

       T = 1978 Sept. 24.111 ET
   Peri. = 287.692                    e =   0.20608
   Node  = 142.836    1950.0          a =   1.82105 AU
   Incl. =  45.760                    n =   0.401071
       q =   1.44577 AU               P =   2.46 years

     1979 ET     R. A. (1950) Decl.     Delta     r     Mag.
     Feb. 16    10 38.62    +23 59.4    0.715   1.687   16.6
          21    10 31.83    +28 33.0
          26    10 24.72    +32 40.6    0.760   1.714   16.9
     Mar.  3    10 17.67    +36 16.4
           8    10 11.05    +39 18.3    0.840   1.741   17.3
          13    10 05.18    +41 47.4
          18    10 00.31    +43 46.3    0.943   1.768   17.7
          23     9 56.61    +45 18.7
          28     9 54.18    +46 28.3    1.063   1.794   18.1


2A 0311-227
     P. A. Charles, K. C. Mason and S. Bowyer, Space Sciences Laboratory,
University of California at Berkeley, report the discovery of
a variable, soft x-ray source whose location is consistent with the
hard x-ray source 2A 0311-227 and the optical counterpart found by
Griffiths et al. (IAUC 3324, 3326, 3327).  The peak observed intensity
during 1978 Jan. 24-30 was ~ 2 x 10**-11 erg cm**-2 s**-1 in the
0.15-0.28-keV bard with a temperature of 10**7 K.  The x-ray behavior
strengthens the similarity to the maqnetic white dwarf AM Her.


1979 February 20               (3329)              Brian G. Marsden

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