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                                                  Circular No. 3787
Central Bureau for Astronomical Telegrams
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

     E. P. Aksenov, Sternberg Astronomical Institute, cables that
Yu. V. Terebizh, Sternberg Crimean Station, reports the discovery
by Metlov of a supernova 25" east and 10" south of the nucleus of
NGC 3044 (R.A. = 9h51m1, Decl. = +1deg48', equinox 1950.0).  On Mar.
13.84 UT the object was of mpg 14.0.

     J. Maza, Department of Astronomy, University of Chile,
telexes that L. E. Gonzalez has discovered at Cerro El Roble a
supernova at the center of a faint, anonymous spiral galaxy at R.A. =
18h37m2, Decl. = -67deg05' (equinox 1950.0).  On Mar. 12 mpg was 18.0.

     The supernova reported on IAUC 3770 was confirmed at the
Asiago Astrophysical Observatory on Feb. 12.  No accurate
position or additional physical observations have been reported.

     Y. Tanaka writes: "The second Japanese x-ray astronomy satellite
was successfully launched from Kagoshima Space Center on Feb.
20, and the instrument complement is operating well.  The satellite
is named Tenma (pronounced Temma), meaning Pegasus.  The orbit
is nearly circular at height 500 km and inclination 31.5 deg.  The
instruments consist of (1) gas scintillation proportional counters
with a 3-deg FWHM circular collimation, area 0.064 m**2, energy range
2-55 kev: (2) similar counters with rotating modulation collimators
of pitch 34' and 43', FOV 3.8 deg FWHM, 0.008 m**2 effective area:
(3) a one-dimensional low-energy (0.2-2 keV) x-ray concentrator
system of 0.0015 m**2: and (4) an Hadamard/Slat sky-monitor system
that monitors one quarter of the sky.  The instruments are coaligned
along the spin axis and can be pointed continuously toward
a given source.  The pointing direction is constrained to be within
60 deg of the antisun direction.  Approximately 8 hr of data per
day can be retrieved, and data acquisition times can be preprogrammed.
Tenma is thus well suited for coordinated optical/x-ray
observations, and we welcome suggestions for these at the address:
High Energy Astrophysics Division, Institute of Space and Astronautical
Science, 6-1, Komaba 4-chome, Meguro-ku, Tokyo 153, Japan
(telex Japan 24550 SPACETKY J, telephone Japan 03-467-1111)."

1983 March 31                  (3787)              Brian G. Marsden

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