Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PNV J06393874+0553520

PNV J06393874+0553520   2012 08 07.8048*  06 39 38.74 +05 53 52.0   9.4 C             Mon       0  

2012 08 09.8048

S. Fujikawa (Kagawa, Japan) reported (to NAOJ) his discovery of possible nova (mag 9.4) using a f.l.=105mm camera lens + CCD. The object also detected in the image taken on Aug. 09.8061 UT. Additional measurements by Fujikawa using PENTAX 100SDUF (F/4, f.l.=400mm) digital camera: Aug. 12.8174, 9.4. S. Nakano measured the last image and get the position end figures of 38s.57, 53".4 (+/- 1".5). There is a faint cataloged star in the neightbourhood of the reported position. USNOB1 06 39 38.581 +05 53 52.77 B1mag=19.72 B2mag=19.35 R1mag=17.77 R2=17.67 I=17.00 GSC2.3 06 39 38.600 +05 53 53.04 jmag=18.73 Vmag=18.41 Fmag=17.39 Nmag=16.51 2MASS 06 39 38.602 +05 53 52.98 J=15.759 H=15.231 Ks=15.036 If this star has brightened, the amplitude is mag about 8, which is larger than typical dwarf novae.

2012 08 09.8048

Corrigendum: The epoch of discovery, FOR 07.8048 READ 09.8048.

2012 08 13.3875

Astrometry: RA: 06 39 38.57 Dec: 05 53 53.0 (J2000.0) Ref: USNO B1.0 +/- 0.4 arc sec Photometry: B=10.36 V=9.83 Photometry ref star: GSC 0159-0525 RA: 06h 39m 47.29s Dec: +05d 57'05.17" Tycho magnitudes B=10.23 V=9.94 Observers: Arto Oksanen and Caisey Harlingten Site: San Pedro de Atacama, Chile

2012 08 15.7621

Photometry: 9.67V, 8.25Rc, 7.98Ic. Instruments 20cm Schmidt-Cassegrain+ Alta E47+ CCD camera. My image is available @ http://meineko.sakura.ne.jp/ccd/PNV_J06393874+0553520.jpg. Seiichiro Kiyota (Tsukuba, Japan)