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IAUC 4274: N Cen 1986; GK Per; SU Tau; 1982i

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                                                  Circular No. 4274
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM    Telephone 617-495-7244/7440/7444


NOVA CENTAURI 1986
     Rob H. McNaught, Siding Spring Observatory, reports his
discovery of a nova on four 1-min exposures with an 85-mm lens on
Nov. 22.7 UT.  He has measured the following position from a 10-s
exposure with the Uppsala southern Schmidt telescope on Nov. 23: R.A.
= 14h32m13s.47, Decl. = -57 24'31".1 (equinox 1950.0).  He also
identified the prenova on U.K. Schmidt B and J plates and provides the
following magnitude information: 1974 May 26, 18.6 (B); June 20,
18.0 (B); 1975 June 9, 20.3 (J); 1976 Mar. 11, 18.6 (J); 1978 May
7, 20.1 (J); 1986 Nov. 8.43 UT, [9.3; 10.43, [7.2; 22.72, 5.6
(pv); 23.41, 5.3; 23.59, 5.3:; 23.73, 5.1 (pv); 23.73, 4.8 (naked
eye).  Red/infrared plates during 1978-1982 show the object to be
somewhat fainter than on the J and B plates.  Examination of five
atlases back to 1916 shows no star in the position to mag 12-16.
     M. W. Feast, South African Astronomical Observatory, communicates
the following observations by B. S. Carter and J. D. Laing
on Nov. 24.1 UT: V = 4.6, J = 3.02, H = 2.69, K = 2.54, L = 2.48.


GK PERSEI
     E. Schweizer, AFOEV; J. Mattei, AAVSO; and G. M. Hurst, "The
Astronomer" magazine, have communicated visual magnitude estimates
indicating that this 1901 nova is having a minor outburst:
Nov. 13.98 UT, 13.1 (S. Lubbock, Bridgend, Wales); 15.79, 13.0 (D.
Stott, Winchester, Eng.); 17.14, 12.5 (J. Griese, Stamford, CT);
19.7, 11.4 (M. Verdenet, Bourbon-Lancy, Fr.); 19.90, 11.7 (
Lubbock); 19.99, 11.8 (G. Dyck, N. Dartmouth, MA); 20.01, 11.4 (G.
Chaple, Townsend, MA); 20.19, 12.2 (Griese); 20.26, 11.9 (Lubbock).


SU TAURI
     Visual magnitude estimates: Nov. 6.9 UT, 10.5 (A. Mizser,
Budapest, Hungary); 8.9, 11.8 (Mizser); 10.82, 11.7 (E. Schweizer,
Strasbourg, France); 12.7, 12.5 (M. Verdenet, Bourbon-Lancy,
France); 20.28, 13.0 (J. Griese, Stamford, CT).


PERIODIC COMET HALLEY (1982i)
     A. Tokunaga, University of Hawaii, communicates the following
observations by W. Golisch at the NASA Infrared Telescope Facility
on Nov. 16.6 UT (7".3 aperture): J = 13.4, H = 13.1, K = 13.1.


1986 November 24               (4274)              Brian G. Marsden

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