CBET003040.txt Electronic Telegram No. 3040 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University; 20 Oxford St.; Cambridge, MA 02138; U.S.A. e-mail:
[email protected] (alternate
[email protected]) URL http://www.cbat.eps.harvard.edu/index.html Prepared using the Tamkin Foundation Computer Network POSSIBLE NOVA IN CARINA (TCP J10502000-6406480) John Seach, Chatsworth Island, NSW, Australia, has reported his discovery of a possible new nova (mag 10.2) on three CCD images (limiting mag 11.0) taken on Feb. 26.543 UT with an SLR camera with a 50-mm f/1.0 lens; he gives the position of the variable as R.A. = 10h50m20s, Decl. = -64d06'48" (equinox 2000.0), and he adds that a possible image of the new object at mag 11 is seen at the limiting of visible on an image taken on Feb. 25.733. Nothing is present at this position on his image from Feb. 23.424 (limiting mag 11) or on a red Palomar Sky Survey image. The variable was designated TCP J10502000-6406480 when it was posted at the Central Bureau's TOCP webpage. Additional magnitudes for the possible nova: Feb. 27.441, 10.4 (Seach); Mar. 1.155, V = 10.55 (Arto Oksanen and Caisey Harlingten, using a 0.50-m telescope at San Pedro de Atacama, Chile; position end figures 19s.66, 46".7; USNO-A2.0 reference stars; no variability over four hours, Mar. 1.17-1.33 UT); 1.295, V = 10.32, I = 9.00 (J. Hambsch, Mol, Belgium; via E. Waagen, AAVSO ); 1.458, B = 10.91, V = 10.31 (T. Bohlsen, Armidale, NSW, Australia; via Waagen); 1.461, R = 9.65, I = 9.11 (Bohlsen); 2.292, V = 10.40 (Hambsch); 3.306, V = 10.72, I = 9.30 (Hambsch); 3.364, V = 10.68, I = 9.32 (Hambsch). Oksanen notes that a nearby very faint star is visible near the plate limit (mag perhaps 19) on a red U.K. Schmidt telescope IIIa-F plate (RG610 filter) taken on 1994 Apr. 9, but he adds that the star is not exactly at the position of the presumed nova. Oksanen's image posted is at the following website URL: http://pilvi.dyndns.org/arto/TCPJ10502000-6406480-S001-R001-C001-V.jpg. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. 2012 March 4
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Daniel W. E. Green
