Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J01385459-4235088

PSN J01385459-4235088   2011 09 21.5433*  01 38 54.59 -42 35 08.8  15.8 U   18E   2S  N644      9 2

2011 09 23.614

This possible supernova in NGC 644 was seen with 10 x 300 sec images using a red filter. Astrometry: RA 01 38 54.56 Dec -42 35 08.8 Photometry: Mag 15.8 +/- 0.1 R These data were collected by Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia. Link to image and further information: http://www.flickr.com/photos/43846774@N02/6176674798/

2011 09 23.760

This possible supernova in NGC 644 was seen with 6 x 600 sec images using an infrared filter (>700 nm). Astrometry: RA 01 38 54.58 Dec -42 35 08.1 Photometry: Mag 15.6 +/- 0.4 IR These data were collected by Joseph Brimacombe, Coral Towers Observatory, Cairns. Link to image and further information: http://www.flickr.com/photos/43846774@N02/6177184698/

2011 09 25.5856

Object detected at position end figures 54.59,08.7 (UCAC2). Magnitude 15.7 U +/- 0.2. Limiting magnitude 18.0 imaged at GRAS telescope, Officer, Australia. 1 x 120-sec image. Nothing visible at this location on DSS. Observer: C. Jacques and E. Pimentel, Belo Horizonte, Brazil. Image posted at: http://ceamig-rea.net/SUPERNOVAE/CONFIRMATIONS/PSN_J01385459-4235088/Ngc644_SNC.jpg

2011 09 24.613

Follow-up magnitude: 15.6 +/- 0.4 IR (>700 nm) These data were collected by Joseph Brimacombe, Coral Towers Observatory, Cairns. Link to image and further information: http://www.flickr.com/photos/43846774@N02/6194733505/