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IAUC 6106: X-RAY N IN Sco; PKS 0422+004; V1333 Aql; 1994l

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                                                  Circular No. 6106
Central Bureau for Astronomical Telegrams
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
Phone 617-495-7244/7440/7444     TWX 710-320-6842 ASTROGRAM CAM

     S. N. Zhang, B. A. Harmon, W. S. Paciesas, C. A. Wilson, and
G. J. Fishman report for the Compton Gamma Ray Observatory BATSE
Team:  "The intensity of the current outburst from this object (cf.
IAUC 6101) has gradually increased from 710 mCrab on Nov. 7 to a
peak of about 830 mCrab between Nov. 10 and 11.  It has since
declined to 660 mCrab as of Nov. 15.  The approximate error on
these intensities is 5 percent.  The photon spectrum is well fit
with a power law of index -3.1 +/- 0.1 during this period.
Immediate follow-up radio observations of this source are strongly
encouraged, because a giant radio outburst was reported (IAUC
6055) during the decline of the hard x-ray flux in August (IAUC
6046 and 6056).  Relativistic jets were formed shortly after that
(IAUC 6060)."

PKS 0422+004
     M. Fiorucci and G. Tosti, Astronomical Observatory and Department
of Physics, University of Perugia, report that their photoelectric
observations show that this BL-Lac object is in a high-
luminosity stage with superimposed rapid variations having temporal
scales of a week or less.  CCD V magnitudes:  Oct. 15.10 UT, 15.20;
Nov. 5.08, 14.57; 11.98, 15.26; 17.98, 13.85; 18.02, 13.79.

     M. Garcia, P. Callanan, J. McClintock, and P. Zhao, Smithsonian
Astrophysical Observatory report:  "V1333 Aql, the optical
counterpart of the x-ray binary Aquila X-1, is once again in its
low state.  CCD images obtained between 1994 Apr. 9 and July 31
show that the V magnitude ranged from 17.4 to 18.0.  However, our
most recent observations on Nov. 5.1 and 14.1 UT found V = 18.96
and 19.30 (+/- 0.04), respectively."

     Some observers have commented on the existence of a
significant fan-shaped anti-tail around Nov. 7-13 UT.  Total
visual magnitude estimates by C. S. Morris from southern
California (L = 0.26-m reflector; B = 20x80 binoculars):  Oct.
2.47 UT, 9.0 (L); 3.47, 8.9 (L); 7.47, 8.8 (L); 8.48, 8.8 (L);
9.48, 8.8 (L); 12.44, 9.0 (L); 30.36, 8.0 (B); Nov. 12.50, 7.9 (B).

1994 November 19               (6106)            Daniel W. E. Green

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