Central Bureau for Astronomical Telegrams
CBAT "Transient Object Followup Reports"
PSN J07484410+5436405
PSN J07484410+5436405 2014 03 26.6901* 07 48 44.10 +54 36 40.5 17.9 U 55E 2S N2446 R 6
2014 03 26.6901
Zhijian Xu(Nanjing,Jiangsu,China) and Xing Gao (Urumqi,Xinjiang,China), report the discovery of a possible supernova (mag approximately 17.9) on several 40-s survey images (limiting mag about 19.5) taken by Xing Gao in Xingming Observation Sky Survey(C42) around Mar.26.69009 UT.using an unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ). The new object approximately located at R.A.=07h 48m 44s.10 Decl.=+54°36'40".5(equinox 2000.0). Which is about 54.8" east and 2.4" south of the center of the NGC 2446. Nothing is visible at this position on archival images taken on Mar.3(limiting mag 19.0),Mar.21(limiting mag 18.5), or on the DSS from Feb.25,1995(limiting mag about 19.5). NET USNO-A2.0 XM66ZX C2014 03 26.69009 07 48 44.10 +54 36 40.5 17.9 V C42 All images can be seen from: http://www.xjltp.com/XOSS/XM66ZX/XM66ZX.htm C42,Xingming Observatory,Mt. Nanshan. Observers Z.Xu,X.Gao,Measurers Z.Xu 0.36-m f/6.9 Schmidt-Cassegrain telescope and CCD.
2014 03 28.07472
This object was observed by Federica Luppi and Luca Buzzi from Schiaparelli Observatory, Varese, Italy. In a stack of images totalling 8 minutes of unfiltered exposure time, the object has position end figures 44s.05, 40".5 and magnitude 17.6. Image posted at URL http://www.astrogeo.va.it/pub/TOCP/PSN_N2446.jpg
2014 03 28.7327
This object was observed with 3 x 60s images using an unfiltered Photometry: Mag. = 17.0 U. Follow-up image posted at URL http://njzhijian.lamost.org/PSN%20J07484410+5436405.jpg
2014 03 28.827
This transient was observed on 2014 03 28.827 by Gianluca Masi, Francesca Nocentini and Patrick Schmeer, remotely using the 17"-f/6.8 corrected Dall-Kirkham robotic unit part of the Virtual Telescope Project facility, at Bellatrix Astronomical Observatory in Ceccano, Italy. 120-seconds exposures, unfiltered, show the source at mag. 17.1 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 44.02; 40.5 (J2000.0, mean residuals of 0.2" on both axes).
2014 03 28.8671
Mag.: 17.5(V) R.A.: 07 48 43.97; Decl.: +54 36 40.8 (2000.0). Reference: PPMXL Observer: Massimiliano Martignoni - Observatory: Stazione Astronomica Betelgeuse (B75), Magnago, Italy Telescope: Schmidt-Cassegrain 0.25m-f/10.0 - CCD: KAF0261E
2014 03 27.129
This possible supernova in NGC 2446 was detected with 6 x 10 min images using a clear filter Photometry: Mag 18.15 +/- 0.27 C (V for ref) Astrometry: RA 07 48 44.06 Dec +54 36 These data were collected remotely by Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia. Link to image and further information: https://www.flickr.com/photos/43846774@N02/13464892014/
2014 03 29.141
Follow-up This possible supernova in NGC 2446 was detected with 3 x 10 min images using a clear filter Photometry: Mag 17.33 +/- 0.28 C (V for ref) Astrometry: RA 07 48 44.06 Dec +54 36 40.8 These data were collected remotely by Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia. Link to image and further information: https://www.flickr.com/photos/43846774@N02/13518940495/
2014 03 30.150
Follow-up This possible supernova in NGC 2446 was detected with 5 x 10 min images using a clear filter Photometry: Mag 17.10 +/- 0.29 C (V for ref) Astrometry: RA 07 48 44.07 Dec +54 36 40.7 These data were collected remotely by Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia. Link to image and further information: https://www.flickr.com/photos/43846774@N02/13597177704/
2014 04 01.6230
2014.04.01.6230 UT. Mag. = 16.3 with 3 x 60s images using an unfiltered CCD +Celestron C14 Schmidt-Cassegrain telescope D=356-mm f/6.9. Xingming Observation Sky Survey(C42), by Zhijian Xu & Xing Gao. Follow-up image posted at URL: http://njzhijian.lamost.org/PSN%20J07484410+5436405-0401.jpg
2014 04 02.130
Follow-up This possible supernova in NGC 2446 was detected with 3 x 10 min images using a clear filter Photometry: Mag 16.56 +/- 0.30 C (V for ref) Astrometry: RA 07 48 44.07 Dec +54 36 40.7 These data were collected remotely by Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia. Link to image and further information: https://www.flickr.com/photos/43846774@N02/13618556293/
2014 04 04.141
Follow-up This possible supernova in NGC 2446 was detected with 3 x 10 min images using a clear filter Photometry: Mag 16.44 +/- 0.30 C (V for ref) Astrometry: RA 07 48 44.08 Dec +54 36 40.8 These data were collected remotely by Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia. Link to image and further information: https://www.flickr.com/photos/43846774@N02/13732711465/
