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IAUC 5907: GRO J0422+32; 1993e; N Aql 1993

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                                                  Circular No. 5907
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)


GRO J0422+32
     P. Zhao, P. Callanan, M. Garcia, and J. McClintock, Smithsonian
Astrophysical Observatory, report: "The x-ray nova GRO J0422+32,
which is currently in outburst (IAUC 5901), continues to brighten
optically.  CCD photometry obtained with the F. L. Whipple Observatory's
1.2-m telescope gives the following magnitudes (+/- 0.02):
Dec. 10.35 UT, R = 14.89; 10.47, 14.81; 13.12, R = 14.92, V =
15.21; 14.09, 14.90, 15.16; 14.37, 14.87, 15.13.  The nova has
brightened by > 0.5 mag during the past 6 days; it is now brighter
than the reported maximum of the outburst that occurred this past
August (IAUC 5842, 5844)."
     R. M. Wagner and M. E. Everett, Ohio State University; C. R.
Shrader, Goddard Space Flight Center, NASA; and S. G. Starrfield,
Arizona State University, report:  "Optical spectrograms (range
420-780 nm, resolution 1 nm) were obtained with the Multiple Mirror
Telescope on Dec. 14.1-14.4 UT during the current outburst (IAUC
5901).  Our spectra are similar to those obtained during the August
outburst (IAUC 5842) and exhibit broad Balmer absorption lines with
emission cores as well as emission lines due to He I (587.5 nm) and
He II (468.6 nm) superposed on a blue continuum.  The N III blend
at 464-465 nm is weak or absent, in contrast to our spectra
obtained during the initial 1992 August outburst (IAUC 5589).
Measurements of He II (468.6 nm) give an equivalent width of 0.18 nm
and a FWHM of nearly 1700 km/s."


PERIODIC COMET SHOEMAKER-LEVY 9 (1993e)
     Users of the ephemeris option in the Computer Service are
reminded that planetary perturbations are not considered and that the
computation is therefore valid only close to the epoch 1994 May 8.0
of the orbital elements tabulated for this comet (cf. IAUC 5906).
There is a separate option that provides perturbed, daily
ephemerides of the nine nuclei that have been well observed.


NOVA AQUILAE 1993
     Further CCD photometry by H. Mikuz, Ljubljana, Slovenia (cf.
IAUC 5838): Dec. 4.72 UT, V = 13.17 +/- 0.02; 12.73, 13.18 +/- 0.02.


1993 December 15               (5907)            Daniel W. E. Green

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