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IAUC 4736: 1989g; 1989E; 3C 279; Corr

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IAUC number 

                                                  Circular No. 4736
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 or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


PERIODIC COMET PONS-WINNECKE (1989g)
     This comet has been recovered as stellar images on CCD frames
taken by J. Gibson with the 1.5-m reflector (+ Gunn r filter)
at Palomar.  The following positions are in agreement with the
orbital elements on MPC 12123 (ephemeris on MPC 13699).

     1989 UT             R.A. (1950) Decl.        m2
     Jan. 17.47341   12 29 03.37   +25 59 38.8   20.5
          17.47904   12 29 03.59   +25 59 42.2
          17.49624   12 29 04.31   +25 59 52.4
          17.50073   12 29 04.49   +25 59 55.0
          18.45535   12 29 45.01   +26 09 34.4
          18.46061   12 29 45.20   +26 09 37.8
          18.46679   12 29 45.49   +26 09 41.6
          18.47119   12 29 45.62   +26 09 44.5


SUPERNOVA 1989E IN MCG +5-32-45
     C. Pollas, Observatoire de la Cote d'Azur, reports his
discovery on a Feb. 7 Schmidt plate of a possible supernova in
MCG +5-32-45.  The object is located at R.A. = 13h35m19s.91,
Decl. = +29 03'24.4, its offset from the more dense part of the
galaxy's center being 5".1 east and 0".5 north.  Photographic
magnitude estimates:  Feb. 7.17 UT, B = 18.6; 8.21, R = 19; 9.16,
R = 19.


3C 279
     F. Makino, Institute of Space and Astronautical Science; and
T. Ohashi, Department of Physics, University of Tokyo, telex:  "The
quasar 3C 279 was observed from the x-ray astronomy satellite Ginga
on Jan. 21.  The energy flux and photon index were (4.3 +/- 0.2) x
10E-11 erg s-1 cm-2 and 1.6 +/- 0.1, respectively, in the energy range
from 2 to 30 keV.  The intensity was one-third of that observed on
1988 July 6 (IAUC 4626).  Further x-ray observations of 3C 279 will be
conducted in the end of May or early June 1989.  Simultaneous coverage
at other wavelengths would be useful."


CORRIGENDUM
     On IAUC 4726, '1989 AC', line 1,  for  0.61-m  read  2.24-m


1989 February 10               (4736)             Daniel W. E. Green

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