Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 6091: 1994r; KS 1730-312; 1994g; 1994j

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 6090 SEARCH Read IAUC 6092

View IAUC 6091 in .dvi or .ps format.
IAUC number 

                                                  Circular No. 6091
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
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
MARSDEN@CFA.HARVARD.EDU or GREEN@CFA.HARVARD.EDU (science)


COMET MACHHOLZ (1994r)
     Donald E. Machholz, reports his visual discovery of a comet.
The following observations are available:

     1994 UT             R.A. (2000) Decl.        m1    Observer
     Oct.  8.505      8 42.0       +55 23        11.5   Machholz
           8.81957    8 41 44.72   +55 25 29.2   16.5   Ticha
           8.82142    8 41 44.63   +55 25 29.6            "
           8.82392    8 41 44.46   +55 25 30.2            "

D. E. Machholz (Colfax, CA).  0.25-m f/3.8 reflector, 36 x.  Comet
   diffuse with weak condensation.
J. Ticha and M. Tichy (Klet Observatory).  0.57-m f/5.2 reflector + CCD
   + R filter.  Measurer M. Tichy.  Object slightly diffuse.


KS 1730-312
     M. Gilfanov, E. Churazov, J. Ballet and E. Jourdain, on behalf of
Granat team, report: "In the course of observations of the Galactic
Center region on Sept. 26-27 Granat/SIGMA marginally detected KS 1730-312
(cf. IAUC 6083) with a 40-150-keV flux of 40 +/- 15 mCrab.  During
subsequent observations on Sept. 28-30 the hard x-ray emission from the
source was below SIGMA sensitivity (2 sigma limit 30 mCrab).  The fast
increase of the flux in the standard x-ray band observed by TTM
(cf. IAUC 6088) was thus accompanied by a decrease of the hard x-ray flux,
this behavior being consistent with dramatic steepening of the
broad-band source spectrum observed by both TTM and SIGMA."


PERIODIC COMET HARRINGTON (1994g)
     Total visual magnitude estimates: Aug. 7.39 UT, 13.1 (A. Hale,
near Chaparral, NM, 0.41-m reflector); 14.45, 13.2 (Hale); Sept. 7.03,
14.1 (K. Sarneczky, Raktanya, Hungary, 0.44-m reflector); 9.42, 12.9 (Hale).


PERIODIC COMET BROOKS 2 (1994j)
     Total visual magnitude estimates by Hale: Aug. 14.46 UT, 13.8;
Sept. 9.40, 13.9; 16.44, 13.8.


1994 October 8                 (6091)              Brian G. Marsden

Read IAUC 6090 SEARCH Read IAUC 6092

View IAUC 6091 in .dvi or .ps format.

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!