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IAUC 5507: 1992V; V1333 Aql; 1992d; 1991d

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                                                  Circular No. 5507
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

     C. Pollas, Observatoire de la Cote d'Azur, reports his discovery
on IIIa-J OCA Schmidt plates taken Apr. 22.9 and 26.9 UT (limiting
magnitude 21.5) of an apparent supernova of mag B = 18.0 located
at R.A. = 12h32m14s.73, Decl. = +14 50'06".2 (equinox 1950.0).
SN 1992V is offset 9".7 west and 8".5 south of the bright nucleus
of a very diffuse, face-on spiral galaxy.  Nothing is visible to
mag 19 (B) on Mar. 3.1 or to mag 20.5 (panchromatic film) on Mar.
10.1 exposures taken with the OCA Schmidt telescope.  A star of mag
14 has end figures 05s.90, 07".7.  T. Balonek, Colgate University,
confirms the existence of SN 1992V, which also does not appear on
the Palomar Sky Survey.

     S. A. Ilovaisky and C. Chevalier, Observatoire de Haute
Provence, communicate:  "Observations of V1333 Aql, the optical
counterpart of the Aquila X-1 x-ray transient, made with the Haute
Provence 1.2-m telescope (+ CCD camera) on Apr. 11, 12, 25, and 27,
show that the object is bright again.  The previous activity cycle
(IAUC 5281, 5297) ended sometime between 1991 Oct. 10 and Nov. 5.
Further optical monitoring will continue at Haute Provence."

     Total visual magnitude estimates (cf. IAUC 5491):  Apr. 5.50
UT, 8.0 (C. S. Morris, Pine Mountain Club, CA, 20x80 binoculars;
45' tail in p.a. 280 deg); 10.12, 8.4 (H. Mikuz, Ljubljana, Slovenia,
20x60 binoculars); 13.14, 8.5 (M. Tombelli, Montelupo, Italy,
0.44-m reflector); 21.01, 8.1 (B. H. Granslo, Fjellhamar, Norway,
0.20-m reflector); 26.03, 8.3 (Granslo).

     Total visual magnitude estimates (cf. IAUC 5444):  Mar. 1.43
UT, 10.3 (G. W. Kronk, Troy, IL, 0.33-m reflector); 4.51, 10.9 (A.
Hale, Las Cruces, NM, 0.41-m reflector); 11.50, 11.6 (Hale); Apr.
4.49, 11.5 (Morris, 0.26-m reflector); 10.44, 11.6 (Hale).

1992 April 28                  (5507)            Daniel W. E. Green

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