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IAUC 3733: N Sgr 1982; E2003+225; 1980b

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                                                  Circular No. 3733
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

     H. Kosai, Tokyo Astronomical Observatory, telexes that Minoru
Honda, Kurashiki, has discovered a possible nova as follows:

          1982 UT            R.A. (1950.0) Decl.        mv

          Oct.  4.43785      18 31.7      -26 27        9

Further observations on Oct. 6 and 7 showed no variation in
brightness.  The object was yellowish-orange in color.
     The object was confirmed as a nova by P. Mack and A. W. J.
Cousins at the South African Astronomical Observatory.  Photographically
on Oct. 8.87 UT the object was about as bright as SAO
187001.  Photometry on Oct. 10.77 gave V = 8.72.

     J. Nousek, G. Luppino and S. Gajar, Astronomy Department,
Pennsylvania State University, report that the soft x-ray source
E2003+225 has been identified with a new AM-Her-type variable
star.  Spectrograms obtained with the 1.5-m reflector reveal that
the optical counterpart (R.A. = 20h03m30s, Decl. = +22deg31'.5, equinox
1950.0; mag 15) shows strong H and He II emission lines with
periodic Doppler shifts of 500 km/s.  High-speed optical photometry
obtained with a 0.9-m reflector at Kitt Peak by H. E. Bond and A.
D. Grauer shows the orbital period to be 0.15441 day.  The lightcurve
shows a broad, flat-bottomed minimum lasting nearly 25 percent of the
period.  Polarimetric observations obtained with the 2.3-m reflector
by G. Schmidt, G. Hill and S. Tapia show circular polarization
(maximum 2 percent in U, 7.5 percent in I) and one strong and one
weak linear-polarization peak during each period.

     I. M. Coulson, South African Astronomical Observatory, communicates
the following photometric observations by J. D. Laing and himself:
July 24.90 UT, diaphragm 44", V = 11.86, B-V = +0.72, U-B = +0.27;
diaphragm 21", 12.50, +0.75, +0.31; July 26.90, diaphragm 35", 12.60,
+0.73, +0.37; diaphragm 24", 12.86, +0.72, +0.29.  Uncertainties are
+/- 0.01 mag.

1982 October 12                (3733)              Brian G. Marsden

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