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IAUC 6006: GX 339-4; 1994f

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                                                  Circular No. 6006
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)


GX 339-4
     R. Sood, Australian Defence Force Academy, Canberra; and D.
Campbell-Wilson, Molonglo Radio Observatory, University of Sydney,
communicate:  "We report the detection of radio emission from the
x-ray source GX 339-4 (4U 1658-48).  Observations of this previously-
radio-quiet black-hole candidate were made with the Molonglo
Observatory Synthesis Telescope at 843 MHz, imaging a 23' x 31'
field with 44" resolution.  The time-averaged flux between May
25.35 and 25.85 UT was 10.0 +/- 0.7 rms mJy.  The observations were
repeated during the following week with these results:  June 1.35-
1.60, 6 +/- 0.9 rms mJy; 2.41-2.60, 7.0 +/- 1.3; 3.35-3.84, 6.8 +/-
0.7.  Preliminary data analysis does not reveal, within the
constraints of our resolution, the extended radio jet structure for
GX 339-4 predicted by Miyamoto and Kitamoto (1991, Ap.J. 374, 741)."


COMET TAKAMIZAWA-LEVY (1994f)
     Extension to ephemeris on IAUC 5997:

1994 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
June 12    13 30.93   +65 19.9   1.117   1.392   81.4   46.1    8.7
     17    12 46.26   +60 32.9   1.225   1.410   77.4   44.7    8.9
     22    12 19.88   +55 58.8   1.344   1.431   73.2   42.8    9.2
     27    12 03.43   +51 55.1   1.469   1.455   68.9   40.7    9.5
July  2    11 52.70   +48 23.0   1.597   1.483   64.7   38.3    9.7
      7    11 45.52   +45 19.1   1.727   1.513   60.6   35.8   10.0
     12    11 40.67   +42 39.1   1.854   1.546   56.5   33.2   10.2
     17    11 37.42   +40 19.0   1.979   1.581   52.5   30.6   10.5
     22    11 35.30   +38 15.6   2.100   1.618   48.5   28.1   10.7
     27    11 34.03   +36 26.0   2.217   1.657   44.7   25.5   10.9
Aug.  1    11 33.38   +34 47.9   2.328   1.698   41.0   23.1   11.1
      6    11 33.23   +33 19.7   2.433   1.740   37.5   20.8   11.3

     Total visual magnitude estimates (cf. IAUC 5992):  May 29.94
UT, 8.4 (A. Diepvens, Balen, Belgium, 0.15-m refractor); June 1.90,
8.7 (K. Sarneczky, Budapest, Hungary, 20x60 binoculars); 8.27, 8.0
(C. E. Spratt, Victoria, BC, 0.20-m reflector).


1994 June 9                    (6006)            Daniel W. E. Green

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