------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2618 2010 Jan 24 20.55UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074 INTERNET: GUY@TAHQ.DEMON.CO.UK Backup: gmh@wdcc1.bnsc.rl.ac.uk WORLD WIDE WEB http://www.theastronomer.org ------------------------------------------------------------------- NOVA SAGITTARII 2010 John Seach, NSW, Australia, reports on CBET 2140 his discovery of a possible nova on three 6-s CCD exposures (limiting mag 11) obtained on 2010 Jan. 20.22 UT with a Nikon D300 camera + 50mm f/1.4 lens. It is located at: RA 18h 07m 26s DEC -29 01' (2000) The object was not recorded to a limit of 11.5 on Nov 15.89UT. Following an appeal by the Central Bureau, S. Kiyota of Japan reports that CCD images taken on Jan. 22 with a 20-cm Schmidt-Cassegrain telescope + CCD yield the following position: RA 18h 07m 26.79s DEC -29 00' 42.8" (2000) and adds magnitudes: Jan. 22.862 UT, V = 8.98, R_c = 8.38; 22.864, I_c = 7.78. W. Vollmann, Vienna, Austria, reports that he measured position end figures 27.0s, 44" and green mag 9.3 from unfiltered images taken by H. Koberger, Tenerife with a digital SLR camera + 300mm lens on Jan. 22.287, adding that nothing is visible at this position within 10" on Digitised Sky Survey blue and red images to limiting mag approximately 18. H. Maehara, Kwasan Observatory, Kyoto University, relays on CBET 2142 that a low-resolution spectrogram was obtained on Jan. 23.887 UT with the 0.25-m telescope of the Kwasan Observatory. The spectrum shows H_alpha, H_beta, and Fe II emission lines. These features suggest that this object is a "Fe II"-class nova. K. Nishiyama and F. Kabashima, Japan, report mag 8.5 and position RA 18h 07m 26.95s DEC -29 00' 43.6" (2000) from five 5-s unfiltered CCD frames (limiting magnitude 15.0) taken around Jan. 23.892 UT using a Meade 200R 0.40-m f/9.8 reflector + CCD. The AAVSO advise that charts for Nova Sgr 2010 may be plotted using VSP: http://www.aavso.org/observing/charts/vsp/index.html?pickname=Nova%20Sgr% 202010 SUPERNOVA 2009mu IN ESO 374-3 Discovery by the CHASE Project of a possible supernova (CBET 2091): SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009mu Dec 23.28 09 51 57.75 -33 04 42.4 18.2 4.0"E,17.6"S SUPERNOVA 2009mv IN ANONYMOUS GALAXY Discovery by CRTS of a possible supernova (CBET 2092): SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009mv Dec 16.32 07 15 39.74 +35 14 28.5 17.4 1.1"E, 4.6"S A spectrogram obtained with the Palomar 5-m reflector on Dec 19.35 shows 2009mv to be most similar to the peculiar type-Ia supernova 2006gz at five days past maximum light. SUPERNOVA 2009mw IN ESO 499-5 Discovery by the CHASE Project of a possible supernova (CBET 2094): SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009mw Dec 23.30 09 47 14.96 -24 51 18.8 18.3 22.2"E,56.8"S M. Stritzinger, Las Campanas Observatory et. al., report that an optical spectrum of Dec. 25.2 UT with the Gemini telescope reveals that it is a type-IIP supernova around a month past explosion. Guy M Hurst