Discovery certificate for object 2019aex
TNS Astronomical Transient Report No. 29311 [ 2019TNSTR.145....1S ]

Date Received (UTC): 2019-01-27 04:10:17
Sender: Prof. Krzysztof Stanek
Source Group: ASAS-SN

K. Z. Stanek, for the ASAS-SN team report/s the discovery of a new astronomical transient.

IAU Designation: SN 2019aex
Discoverer internal name: ASASSN-19bk
Coordinates (J2000): RA = 00:39:15.768 (9.8157) DEC = +06:41:17.38 (6.68816)
Discovery date: 2019-01-27 02:09:36 (JD=2458510.59)

Potential host galaxy: 2MASX J00391571+0641188
Host redshift: 0.038683

Remarks: On the rise, likely nuclear source, so could also be a TDE

Photometry

Discovery (first detection):
Discovery date: 2019-01-27 02:09:36
Flux: 17.4 ABMag
Filter: g-Sloan
Instrument: Leavitt
Telescope: ASASSN-Leavitt

Last non-detection:
Last non-detection date: 2019-01-20 02:24:00
Limiting flux: 17.4 ABMag
Filter: g-Sloan
Instrument: Leavitt
Telescope: ASASSN-Leavitt


Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2019aex