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Thanks Mati and Brian. The chart I am using is RASNZ 89 and it appears I have been observing the correct catalogued star. Perhaps the question now becomes is there any information on the variability of NSV4499 if it is not a red star (but blue as suggested by the CCD image) yet has a reported 4 magnitude photographic range in brightness? The CCD image has a limiting system magnitude fainter than 17. Also, why does SIMBAD list NSV stars either side of NSV4499 (NSV4497, 4498, 4500, 4501) but have no listing for NSV4499? I will keep monitoring this object during the current season to look for any obvious variability. Tks and regards Peter Williams (Apologies for duplicate post. I thought my original got lost in cyber space.) ---------- From: Mati Morel <morel@ozemail.com.au> To: pfwilliams@onaustralia.com.au; vsnet-chat@ooruri.kusastro.kyoto-u.ac.jp; vsnet-id@ooruri.kusastro.kyoto-u.ac.jp Subject: Re: [vsnet-chat 6164] NSV4499 - Gone? Date: Saturday, 15 March 2003 6:04 ----- Original Message ----- From: "Peter F Williams" <pfwilliams@onaustralia.com.au> To: "vsnet-chat" <vsnet-chat@ooruri.kusastro.kyoto-u.ac.jp> Sent: Friday, March 14, 2003 7:57 AM Subject: [vsnet-chat 6164] NSV4499 - Gone? > Dear All, > > I have recently made some observations of NSV4499 around magnitude 14, > assuming it to be a red variable. It lies near the Mira star Y Vel. An > associate obtained a CCD image to help with correct identification (the > RASNZ chart is rather poor) but from this the star I have been observing is > clearly not red and there does not appear to be any nearby suitable > candidates. The Simbad returns no listing for this star. > > Does NSV4499 no longer exist, previously show to be nonvariable or perhaps > a mis identification? > Firstly, the reference to a chart given in the printed version of the NSV appears to be wrong. The reference (681194) is used for a number of stars plotted on RASNZ charts, and probably should read "Charts for Southern Variables, Series 3. 1968. Astronomical Research Ltd, Greerton, Tauranga, New Zealand." NSV 4499 appears on chart 89 of Series 3, under its old name CSV 1454. The dot symbol used is rather large, suggesting a tenth mag. star, but this is misleading. I possess the actual Harvard photo upon which chart 89 is based. NSV 4499 is clearly visible, but only about 12.9 mag. Frank Bateson (Director of VSS) made the identification, and the star matches in position with GSC 8179.3334 (13.7) at 9h28m0.62s -52°11'2.9" This identification seems secure, assuming there has been no gross error in Luyten's position, which is only approximate. Regards, Mati morel@ozemail.com.au .
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