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IAUC 5798: N Aql 1993; 1993M; 1993e

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                                                  Circular No. 5798
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)


NOVA AQUILAE 1993
    R. H. McNaught, Anglo-Australian Observatory, reports the
following precise position for the nova from a film taken with the
Uppsala Southern Schmidt on May 17.6 UT:  R.A. = 19h10m34s.69, Decl.
= +1 29'14".2 (equinox 1950.0; uncertainty 0".3 in each coordinate).
Using the same PPM catalogue stars used for the measurement, the
nearest star to the nova on a U.K. Schmidt R plate taken 1987 May
24 is at mag 19 and has end figures 34s.56, 14".9; this star
appears on the Palomar Sky Survey in the same position, indicating
that proper motion is not responsible for the position discrepancy.
The star shows neutral colors and there is no evidence of variability
on the Palomar prints or on 12 U.K. Schmidt exposures in J, R,
and I taken during 1979 to 1988.  This suggests that the pre-nova
was fainter than mag 22.
     Further visual magnitude estimates:  May 16.55 UT, 8.0 (P.
Williams, Heathcote, N.S.W., Australia); 17.99, 8.0 (H. Dahle,
Oslo, Norway); 19.00, 7.7 (P. Rapavy, Rimavska Sobota, Slovakia).


SUPERNOVA 1993M IN ANONYMOUS GALAXY
     E. Cappellaro, European Southern Observatory, reports: "On May
17.2 UT, I obtained a good S/N spectrogram (range 370-900 nm,
resolution 1.5 nm) of SN 1993M (cf. IAUC 5783) using the 3.6-m
telescope (+ EFOSC multi-mode instrument) at La Silla.  Once a redshift
of 0.078 is adopted, the spectrum is identical to that of the type-
Ia SN 1989B (Barbon et al. 1990, A.Ap. 273, 79) obtained 11 days
after maximum, but the Si II 635.5-nm absorption (measured at 671
nm) is slightly less pronounced.  Preliminary photometry obtained
on May 16.2 at the 1.5-m Danish telescope gives: B = 21.4, B-V =
+0.6, V-R = +0.3."


PERIODIC COMET SHOEMAKER-LEVY 9 (1993e)
     Total visual magnitude estimates (cf. IAUC 5766):  Apr. 17.26
UT, 13.3 (C. S. Morris, Pine Mountain Club, CA, 0.26-m reflector);
17.85, 13.2 (H. Mikuz, Ljubljana, Slovenia, 0.20-m Baker-Schmidt
camera + CCD + V filter); 24.06, 13.5 (M. Tombelli, Montelupo,
Italy, 0.40-m reflector); May 17.94, 14.2 (Mikuz).


1993 May 19                    (5798)            Daniel W. E. Green

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