Discovery certificate for object 2018acj
TNS Astronomical Transient Report No. 17190 [ 2018TNSTR.326....1X ]

Date Received (UTC): 2018-03-09 02:06:08
Sender: Mr. Jiangao Ruan
Source Group: XOSS

Jianlin Xu, Mi Zhang, Xiaowei Zhang, Jingyuan Zhao, Weigen Liu, Jiangao Ruan and Xing Gao report/s the discovery of a new astronomical transient.

IAU Designation: SN 2018acj
Discoverer internal name: PSP18B
Coordinates (J2000): RA = 13:48:40.630 (207.169292) DEC = +43:25:04.70 (43.417972)
Discovery date: 2018-03-08 18:03:56 (JD=2458186.2527315)

Potential host galaxy: PGC 48989

Remarks: Jianlin Xu, Mi Zhang, Xiaowei Zhang, Jingyuan Zhao, Weigen Liu, Jiangao Ruan and Xing Gao report the discovery of a possible supernova in PGC 48989. The transient (mag approximately 16.8) on one 40-s survey image (limiting mag about 17.5) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Mar. 08.75273, 2018, using a unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ). The new object approximately located at R.A.=13h48m40.63s +43d25'04".7 (equinox 2000.0). Which is about 16.5" east and 20" north of the center of the PGC 48989. Nothing is visible at this position on archival image taken on Jan. 16.93284, 2018 (limiting mag 19.0). All images can be seen from:http://www.xjltp.com/XOSS/PSP18B/PSP18B.htm. NET UCAC-4 PSP18B C2018 03 08.75273 13 48 40.63 +43 25 04.7 16.5 V C42.

Photometry

Discovery (first detection):
Discovery date: 2018-03-08 18:03:56
Flux: 16.8 VegaMag
Filter: Clear-
Instrument: Other
Telescope: Other

Remarks: using a unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ).

Last non-detection:
Last non-detection date: 2018-01-16 22:23:17
Limiting flux: 19 VegaMag
Filter: Clear-
Instrument: Other
Telescope: Other

Remarks: using a unfiltered CCD ( + Celestron C14 Schmidt-Cassegrain telescope D=356-mm @f/6.9 ).

Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2018acj