Possible Nova in Sco


ASAS Outburst
Possible Nova in Sco
Asteroide Rasante 2002NY40




Astrometry and Photometry


RA 17 12 51.3 DEC -30 56 37

Mag R 11.0 (10.96)



Image taken at 1:15 UT 6-July-2004 with an LX200GPS 10" F3.3. 8x10sec exposures using R filter

DSS2 Image - R Band

DSS2 Image - V Band


From: owner-vsnet-alert@ooruri.kusastro.kyoto-u.ac.jp [mailto:owner-vsnet-alert@ooruri.kusastro.kyoto-u.ac.jp] On Behalf Of Daisaku NOGAMI
Sent: segunda-feira, 5 de julho de 2004 12:25
To: vsnet-alert@ooruri.kusastro.kyoto-u.ac.jp; vsnet-newvar@ooruri.kusastro.kyoto-u.ac.jp
Subject: [vsnet-alert 8223] Fw: Possible outburst of ASAS 171251-3056.6

Dear colleagues,

G. Pojmanski reported a possible new variable object (vsnet-alert 8222). If this is real, the amplitude of this variable seems very large (>5 mag?). No X-ray source is known within 30" around the position suggested by Pojmanski. Confirmation of existence of this object, accurate astrometry, and spectroscopy are urgently needed.

Best regards,
Daisaku Nogami
VSNET Collaboration Team

Begin forwarded message:

Date: Mon, 5 Jul 2004 16:58:01 +0200
From: Grzegorz Pojmanski <gp@astrouw.edu.pl>
To: vsnet-alert@kusastro.kyoto-u.ac.jp
Subject: [vsnet-alert 8222] Possible outburst of ASAS 171251-3056.6

Possible outburst of ASAS 171251-3056.6

ASAS-3 Alert System has detected possible outburst of ASAS 171251-3056.6 (avarge coordinates for two detections: 17:12:51.3 -30:56:39, Eqnx 2000), which is close (within one pixel) to the UNSO B1 objects:
USNOB_0590-0509310 (17:12:51.1087 -30:56:34.070) B2=17.360 I2=15.950
USNOB_0590-0509323 (17:12:51.3387 -30:56:33.620) B2=15.160 R2=16.590 I2=15.630

HJD (2450000+) V

3183.71898 (invisible)
3189.64635 11.983
3191.73900 11.194

Several earlier ASAS observations are probably due to blended images of some faint (V~14+) background stars.

Light curve and images can be found on
or on ASAS Alert pages:
http://www.astrouw.edu.pl/~gp/asas/asas.html -> Alert Service Page -> New alerts