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Special Notice #230: Nova Sagittarii 2011 = PNV J17474639-2335112 [V5587 Sgr]

January 31, 2011: Central Bureau for Astronomical Telegrams Electronic Telegram No. 2644 (CBET 2644, Daniel W. E. Green, ed.) announces the discovery by Hideo Nishimura, Miyawaki, Kakegawa, Shizuoka-ken, Japan (reported by S. Nakano, Sumoto, Japan), of a nova [V5587 Sgr] in Sagittarius on 2011 Jan. 25.86 UT at unfiltered magnitude 11.2 on two 15-s CCD frames with limiting magnitude 12.5; Nakano measured magnitude 11.4 +/- 0.6 on Nishimura's frames.

V723 Cas (Nova Cassiopeiae 1995)

V723 Cas was discovered by M. Yamamoto, Okazaki, Aichi, Japan, on 1995 August 24.57 UT at photographic magnitude 9.2. The finding was made using a 200-mm f/4.0 lens, PO0 filter, and T-Max 400 film. A report by G.V. Williams of the Harvard-Smithsonian Center for Astrophysics shows percursory evidence of this nova located on the Palomar red plate of magnitude 18-19, as seen using the Digital Sky Survey (AAVSO Alert Notices 213, 214, 217, 218, 230; IAUC 6213).

V4362 Sgr (Nova Sagittarii 1994 No. 2)

V4362 (Nova Sagittarii 1994 No. 2)

V1974 Cyg (Nova Cygni 1992)

V1974 Cyg (Nova Cygni 1992)

Nova Cygni 1992
A 1994 Hubble Space Telescope image of the expanding shell of gas expelled by Nova Cygni 1992. Credit: NASA, ESA, HST, F. Paresce, R. Jedrzejewski (STScI)

V838 Her (Nova Herculis 1991)

V838 Her (Nova Herculis 1991)

OS And (Nova Andromedae 1986)

OS And (Nova Andromedae 1986)

PW Vul (Nova Vulpeculae 1984 No.1)

PW Vul (Nova Vulpeculae 1984 No.1)

PU Vul (Nova Vulpeculae 1979)

PU Vul (Nova Vulpeculae 1979)

NQ Vul (Nova Vulpeculae 1976)

 

NQ Vul (Nova Vulpeculae 1976)

NQ Vul was discovered visually by the English amateur astronomer George Alcock on 1976 October 21 at a magnitude of 6.5 (AAVSO Alert Notices 9, 10, 12, 13). A precusor to the event was seen on photographic plates taken 26 hours before discovery by the Sternberg State Astronomical Institute in Moscow (Carroll 1977).

V1500 Cyg (Nova Cygni 1975)

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