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IAUC 4792: WX Cet; U Gem; 1989L; V482 Cyg

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                                                  Circular No. 4792
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

     R. H. McNaught, Coonabarabran, N.S.W.; and G. M. Hurst,
Basingstoke, England, report that A. Pearce, Perth, Western Australia,
has detected this object, which is possibly of WZ-Sge type (Downes and
Margon 1981, M.N.R.A.S. 197, 35P), at a rare outburst, apparently the
first since 1963.  The following visual magnitude estimates have been
reported: June 3.91 UT, 10.8 (Pearce); 4.70, 10.8 (A. F. Jones, Nelson,
New Zealand; communicated by F. M. Bateson via P. M. Kilmartin); 4.77, 11.0
(Jones); 4.83, 11.4 (Pearce); 4.92, 11.5 (Pearce).  Photometry by A. C.
Gilmore, Mount John University Observatory, on June 4.75 UT: V = 11.47,
U-B = -0.78:, B-V = -0.11; V-R = -0.03; V-I = -0.1.  Spectroscopic
coverage would be very useful.

     J. Mattei, AAVSO, reports the following magnitude estimates,
showing that this dwarf nova is in outburst: June 2.15 UT, 9.8 (R.
King, Duluth, MN); 3.12, 9.6 (R. Hays, Worth, IL).

     A. Uomoto, Johns Hopkins University, reports: "Spectra (range
450-750 nm) obtained on June 4.46 UT with the Kitt Peak 4-m reflector/
Cryocam show this object to be a type II supernova near maximum light.
H alpha and H beta are present in emission, with H alpha showing a
P-Cyg profile.  Strong interstellar Na D absorption is seen at the
redshift of NGC 7339.  The V magnitude from the spectrometer is 15.4
+/- 0.1.  Offsets from a nearby star are 10".5 east and 10".0 north."

     Visual magnitude estimates (cf. IAUC 4672): 1988 Nov. 13.91 UT,
14.1 (M. Verdenet, Bourbon-Lancy, France); 25.75, [14.1 (A. Boattini,
Florence, Italy); Dec. 6.71, 14.3 (Boattini); 13.72, 14.2 (Boattini);
1989 Jan. 2.74, 14.2 (Boattini); Mar. 7.17, 14.5 (P. Schmeer,
Bischmisheim, West Germany); 23.17, 13.9 (Boattini); Apr. 6.6, [13.5
(T. Kato, Kyoto, Japan); May 9.07, 13.5 (Boattini); 15.10, 13.5
(Schmeer); 21.94, 13.5 (S. Korth, Dusseldorf, West Germany); 23.95,
13.0 (Korth); 26.98, 12.7 (Schmeer).

1989 June 5                    (4792)              Brian G. Marsden

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