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Re: Possible Nova in Sgr > There is also a GCVS (position still uncertain) star V4006 Sgr > > 180715.3 -272535 (2000.0) SGRV4006 M 11.6 <14.4 P 37846 281 - > > This Mira star is sufficiently bright, but has not been yet properly > identified (although the discovery finding chart would suggest the > GCVS location is correct) with a very conspicuous 2MASS counterpart > at the reported position (either on 2MASS public images and catalogs). > The brightest 2MASS object in this field is the star measured by Kushida > and Kushida. It may have been possible that the original paper > (by L. Lukas) somehow provided an incorrect chart, or the original > type classification was wrong. If V4006 Sgr was truly a Mira-star, > it may have been possible that Nishimura "recovered" this variable. > It would be still worth persuiting for the exact location of this supposed > Mira-star, too. According to vsnet-chat 1860 (http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-chat/msg01860.html), Mati Morel suggested the following identification for V4006 Sgr: 18h 07m 22s.17, -27o 24' 42".85 (J2000.0) based on its red color in USNO A2.0. However, this star does not seem to be particularly bright on 2MASS. Given all the uncertainties claimed in the past, the exact location of V4006 Sgr probably needs to be more closely examined. Regards, Taichi Kato
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