[vsnet-alert 8549] Re: Possible nova

[B Monard]

Just in case nobody has already confirmed, hereby my observed particualrs
for the new bright object reported by Bill:

filtered CCD photometry

N Sgr05?   20050705.08   7.4V
N Sgr05?   20050705.08   7.2Rc

These magnitudes are possibly fainter than the true ones due to saturation
on the images.


Position (2000) vs Tycho stars:

18 17 50.45 -30 26 35.1 (+/- 0.15 arcsec estimated)

USNO-B1.0 shows the following stars within the uncertainty area:

0.1378  18 17 49.83  -30 26 37.0  0595-0712219  1975.1    3  20.35
18.02  23.13
0.1109  18 17 50.96  -30 26 34.2  0595-0712297  1972.9    5  16.04  15.31
16.41  16.05  14.22
0.1371  18 17 51.03  -30 26 38.5  0595-0712305  1972.5    4  18.21  18.12
18.87  17.63

Due to the blue colour and the possibility of the nearest candidate being
the progenitor this might be an outbursting CV, but the brightness increase
of at least 8 magnutdes might hint at a nova...

Regards,

Berto Monard
Bronberg Observatory / CBA Pretoria

PS This posting was delayed over several hours due to yet another sudden
power failure here..


-----Original Message-----
From: W.Liller [mailto:wliller at compuserve.com]
Sent: Monday, July 04, 2005 6:52 PM
To: aavso at aavso.org; Abby; Bill Allen; Berto; chick; cvnet; Duerbeck;
Dan Green; Howard; Kato, T; Krautter; massimo; Mati; Pearce; Raquel;
rypers; Patrick Schmeer; Sumner Starrfield; vsnet-alert
Subject: Possible nova


Hola Everyone -

At July 4.049 UT on two red photos (85mm lens + TP film + deep orange
filter), there appears a stellar image of red magnitude approximately 8.0.
Its position (2000) is 18h 17.9m -30d 27'.  Nothing brighter than 11.0
appears on films taken on June 12.  This is not a known asteroid, I promise
you.  However, it is located in a crowded field and it could be some other
kind of CV.

Now that Deep Impact has occurred (Fantastic!), perhaps you have the time
to verify this candidate nova (or distant supernova).
                        All the best to all,   Bill Liller