[vsnet-alert 9387] Re: Possible nova in Norma

[Michael Linnolt]

I obtained a more accurate position of this object by visual comparison with the stars on the SERC.J.DSS1.276 plate. My best estimate is 16:32:11 -45:09:11 and I found 4 GSC2.3 stars which are potential progenitor candidates for this outbursting object:

S8UT100738 (Bmag=19.29)
S8UT100737 (Bmag=17.14)
S8UT100512 (Bmag=19.65)
S8UT100888 (Bmag=19.51)

My brightness estimate on June 18 0906UT [made using TYC831220151 (V=9.95) and TYC786613161 (V=10.25) using Tycho2+Bessell corrections] is V=10.1 , so little change over the past 24hrs.

Mike Linnolt

----- Original Message -----
From: Michael Linnolt <linnolt at hawaii.edu>
Date: Sunday, June 17, 2007 1:20 am
Subject: [vsnet-alert 9385] Re: Possible nova in Norma
To: "W.Liller" <wliller at compuserve.com>
Cc: AAVSO-DIS <aavso-discussion at mira.aavso.org>, vsnet-alert <vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp>, "Kato,  T" <tkato at kusastro.kyoto-u.ac.jp>

> I can visually confirm Liller's object at the approximate location 
> (J2000) 16h 32m 12s  -45 08' 40". I estimated it to be V=10.2 using 
> comps TYC831220151 and TYC832549931 on June 17 0811UT.
> 
> Mike Linnolt
> Honolulu, HI
> 
> ----- Original Message -----
> From: "W.Liller" <wliller at compuserve.com>
> Date: Saturday, June 16, 2007 6:14 am
> Subject: [vsnet-alert 9384] Possible nova in Norma
> 
> > 
> > Hola Everyone -
> > 
> > There is a possible nova at (2000) 16h 32.2m -45d 08'; its 
> approximate> magnitude is 9.4.  It appears on two photos taken at 
> approximately 
> > June15.086 UT
> > with Kodak TP film, an orange filter and an 85mm lens.  The star 
> is 
> > alsoclearly seen on a pair of similar photos taken at 
> approximately 
> > June 7.193
> > at approximate magnitude 9.1.  Nothing brighter than magnitude 
> 11.0 
> > wasseen at this position on May 20.1.  
> > 
> > Confirmation, mags and spectra needed !  BUT PLEASE send any 
> > informationyou have directly to me, not to the IAUC/Dan Green.
> > 
> > Note too that I will be away from my office/observatory for two 
> weeks> beginning Monday, June 18 at approximately 18h UT.
> > 
> > All the best,   Bill Liller
> > 
>