Possible Supernova in PGC 279613 in the TESS Field
ATel #12392; D. Denisenko (SAI MSU/Germes), M. Malinin, A. Yakubova (Education Center Germes, Moscow)
on 15 Jan 2019; 09:41 UT
Credential Certification: Denis Denisenko (d.v.denisenko@gmail.com)
Subjects: Optical, Supernovae, Transient
We report on the possible supernova in PGC 279613 galaxy. The new object was discovered on the unfiltered images of the field centered at NGC 2442 obtained remotely with iTelescope.Net T31 instrument (0.50-m f/6.8 reflector + CCD) in Siding Spring on 2019 Jan. 14 at 13:52-13:56 UT. The additional confirmation images were taken on 2019-01-14 at 16:38-16:40 UT with the same instrument after meridian crossing. The object is detected on both stacked images (4x60 and 3x60-sec exposures) with the unfiltered magnitude of 18.1m. The OT position (J2000.0): R.A. = 07 35 15.00, Decl. = -69 22 17.7 which is 0" west and 8" north of the center of the host galaxy. Nothing was present at this position on our previous image of this field obtained on 2018 Dec. 29 at 13:53-13:56 UT to the limiting magnitude 19.5.
The sum of discovery and confirmation iTelescope T31 images is posted at the Transient Name Server page of AT 2019sm. The possible supernova was discovered during the after school astronomy classes at Germes Education Center. Spectral confirmation and multi-color follow up observations are encouraged. The galaxy redshift is unknown.
The object is currently in the viewing zone of TESS Camera 4. It should be also noted that PGC 279613 is located 11 arc min north-north-west of NGC 2442 (the host of the brightest supernova of 2015) which is the popular target among astrophotographers. Checking the images of this field in early January 2019 is also encouraged. Chart showing the position of PSN 2019sm between NGC 2434 and NGC 2442 is posted at http://scan.sai.msu.ru/~denis/SN/2019sm-NGC2442-25x20.jpg (25'x20' FOV, North up, East left).
PSN 2019sm on the Transient Name Server
