Central Bureau for Astronomical Telegrams
CBAT "Transient Object Followup Reports"
PSN J07250042+2347030
PSN J07250042+2347030 2012 10 16.7729* 07 25 00.42 +23 47 03.0 17.0 U 16W 3N N2370 0 1
2012 10 16.7729
This PSN in NGC 2370 was discovered by Kunihiko Shima, Fuchu, Tokyo on 11 -frames (limit mag.= about 17.5) exposed by 60-s using 0.45-m f/4.5 Schmidt Cassegrain + Nikon digital camera (D3100, ISO 3200) at Fujimi-Cho, Nagano, Japan.
2012 10 16.7729
Sorry, discoverer's name is Kunihiro Shima.
2012 10 17.40769
Mag.=17.3U, R.A.=07 25 00.42 Decl=+23 47 03.0 (USNO-B1.0), remotely using the iTelescope T21 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer (FLI-PL6303E) at RAS observatory near Mayhill, NM, U.S.A. (H06). Position and magnitude were measured on an image composed from 3-frames which were taken by each 60-seconds exposure under the limiting magnitude = 19.7. Nothing is visible at this location on POSS2/UKSTU (red,1997 Jan.10, limiting mag.= 19) Observer T. Yusa, Osaki, Japan. Link to images: http://space.geocities.jp/yusastar77/supernova/psninN2370_121017.htm
2012 10 18
Buton et al., ATEL 4497 tells that it is a type Ia supernova. http://www.astronomerstelegram.org/?read=4497
2012 10 23.39014
Mag.= 16.6 remotely using 0.25-m f/3.4 hyperbolic astrograph + unfiltered CCD (SBIG ST-10XME) at RAS observatory near Mayhill, NM, U.S.A. (H06). Position and magnitude were measured on an image composed from 4-frames which were taken by each 120-seconds exposure under the limit magnitude = 19.5. Observer T. Yusa, Osaki, Japan. Position and magnitude was measured using UCAC-3. Link to images: http://space.geocities.jp/yusastar77/supernova/psninN2370_121017.htm#Oct23
2012 10 23.640
Mag.= 17.0 observed by T. Noguchi, Katori, Chiba-ken, Japan, Position end figures 00s.45, 03".2 using 0.23-m f/6.3 Schmidt Cassegrain + unfiltered CCD with 60-s exposure under the limit mag.= 18.0. See an image http://park8.wakwak.com/~ngc/images/PSNinNGC2370.jpg.
2012 10 24.680
Mag.= 17.4 V using 1.3-m f/4.85 reflector + CCD with 120-seconds exposure. Observer M. Koishikawa, Sendai Astronomical Observatory, Japan.
2012 10 24.14702
This object was observed by Federica Luppi and Luca Buzzi from Schiaparelli Observatory, Varese, Italy. In a stack of images totalling 5 minutes of unfiltered exposure time, the object has position end figures 00s.43, 02".7 and magnitude 17.1. Image posted at URL:http://www.astrogeo.va.it/pub/TOCP/PSN_N2370.jpg
2012 11 09.70856
Mag.= 17.9V(UCAC-3) using 1.3-m f/4.85 reflector + CCD with 60-seconds exposure. Observer M. Koishikawa, Sendai Astronomical Observatory, Japan.
2012 11 14.767
Mag.= 18.3V on a image composed by five frame with each 60-seconds exposure using 1.3-m f/4.85 reflector + CCD. Observer M. Koishikawa, Sendai Astronomical Observatory, Japan.
2012 11 20.684
Mag.= 18.7V(UCAC-3) on an image composed by three frame with each 120-seconds exposure using 1.3-m f/4.85 reflector + CCD. Observer M. Koishikawa, Sendai Astronomical Observatory, Japan.
2012 12 06.711
Mag.= 19.1V(UCAC-3) on an image composed by five frames with each 60-seconds exposure using 1.3-m f/4.85 reflector + CCD. Observer M. Koishikawa, Sendai Astronomical Observatory, Japan.
2012 12 11.689
Mag.= 19.5V(UCAC-3) on an image composed by three frames with each 120-seconds exposure using 1.3-m f/4.85 reflector + CCD. Observer M. Koishikawa, Sendai Astronomical Observatory, Japan.
2012 12 13.660
Mag.= 19.7V(UCAC-3) on an image composed by three frames with each 120-seconds exposure using 1.3-m f/4.85 reflector + CCD. Observer M. Koishikawa, Sendai Astronomical Observatory, Japan.
