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IAUC 5921: 1993aj; GRO J0422+32; 1993 VW

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                                                  Circular No. 5921
Central Bureau for Astronomical Telegrams
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

     M. Turatto, Padova; and C. Gouiffes, Saclay, write:  "We have
obtained a spectrogram (600-980 nm) of SN 1993aj (cf. IAUC 5915) on
Jan. 11.3 UT with the European Southern Observatory 3.6-m telescope
(+ EFOSC1) at La Silla.  The preliminary reduction shows broad
features, confirming that the object, projected on the disk of an edge-
on galaxy, is indeed a supernova.  Strong emissions are centered at
632.9 and 692.8 nm, and two absorptions are measured at 613.0 and
663.7 nm.  The spectrum resembles those of type-Ia supernovae (e.g.,
SN 1989B, Barbon et al. 1990, A.Ap. 237, 79) at about 2-3 weeks
past maximum, once a correction has been made for z about 0.075 --
rather than the spectra of type-II supernovae, as suggested on IAUC
5917.  Assuming this redshift, the magnitudes reported on IAUC 5919
are consistent with those of a type-Ia supernova in the proximity
of maximum.  The parent galaxy is a highly inclined early-type
spiral. In the observed range, its faint spectrum shows no strong
features.  A weak absorption at 634.6 nm corresponds to the Na I D
line if z = 0.075 is adopted."

GRO J0422+32
     M. R. Zapatero-Osorio, R. Rebolo, M. Kidger, M. Serra-Ricart,
and E. L. Martin, Instituto de Astrofisica de Canarias (IAC), report:
"A new mini-outburst of GRO J0422+32 has been detected using
the 0.80-m IAC telescope at the Teide Observatory.  CCD observations
yield the following magnitudes:  Jan. 5.99 UT, R = 19.1; 7.13,
R = 17.9; 7.84, R = 17.5; 7.96, B = 18.0, V = 17.6, R = 17.4, I =
16.6; 8.10, B = 17.9, V = 17.4, R = 17.2, I = 16.4; 8.97, R = 17.1;
11.04, R = 17.1."

1993 VW
     R. P. Binzel and S. J. Bus, Massachusetts Institute of Technology,
report spectroscopic observations of 1993 VW obtained on Jan.
7 UT with the 2.4-m Hiltner telescope of the Michigan-Dartmouth-MIT
Observatory.  Measurements over 0.4-1.0 microns show spectral
properties resembling the Q-type asteroid (1862) Apollo and possibly
ordinary chondrite meteorites.  Additional physical measurements are
recommended.  Note that a favorable apparition occurs in May 1994.

1994 January 13                (5921)            Daniel W. E. Green

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