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IAUC 5626: 1992w; 1992au; N Sco 1992

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                                                  Circular No. 5626
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@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)


PERIODIC COMET SLAUGHTER-BURNHAM (1992w)
     This comet has been recovered by S. M. Larson and C. D.
Slaughter with the 1.5-m reflector (+ CCD) at the Lunar and Planetary
Laboratory's Catalina Station.  Co-adding of the Cousins R-
band images showed a 10" coma and hint of a tail.  The comet was
also detected on Sept. 18.  The following positions are very close
to the prediction on MPC 16380 (ephemeris on MPC 19888).

     1992 UT             R.A. (2000) Decl.        m1
     Sept.24.18228   20 46 17.20   -22 22 52.2   21.5
          24.18751   20 46 17.19   -22 22 50.6
          24.19206   20 46 17.18   -22 22 51.0
          24.20947   20 46 16.94   -22 22 48.7
          25.13324   20 46 09.48   -22 20 30.2
          25.13939   20 46 09.44   -22 20 29.0
          25.15280   20 46 09.31   -22 20 27.6
          25.15962   20 46 09.28   -22 20 26.2
          25.16830   20 46 09.16   -22 20 24.4
          25.17709   20 46 09.11   -22 20 23.2


SUPERNOVA 1992au IN ANONYMOUS GALAXY
     M. M. Phillips, Cerro Tololo Interamerican Observatory, reports
that a spectrogram of SN 1992au obtained with the CTIO 4.0-m
telescope on Oct. 1.17 UT shows that this object is a type-Ia
supernova. Comparison with spectra of the prototype-Ia SN 1989B
indicates that maximum light for SN 1992au probably occurred 70 +/- 10
days ago, consistent with this supernova having been discovered
near peak brightness (see IAUC 5584).  A spectrum obtained of the
host galaxy of SN 1992au yields a redshift of 0.062.


NOVA SCORPII 1992
     Additional photometry (cf. IAUC 5574, 5584) by A. C. Gilmore,
Mt. John University Observatory (uncertainty +/- 0.02):  Sept.
17.39 UT, V = 10.47, B-V = +0.81, U-B = +0.02, V-R = +0.96, V-I =
+1.49.
     Further unfiltered CCD magnitudes by W. Liller, Vina del Mar,
Chile:  Sept. 2.01 UT, 8.76; 2.97, 8.99; 5.00, 9.12; 6.01, 9.33;
7.00, 9.44 (comparison star SAO 227635).


1992 October 2                 (5626)            Daniel W. E. Green

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