Discovery certificate for object 2019th
TNS Astronomical Transient Report No. 28856 [ 2019TNSTR..90....1A ]

Date Received (UTC): 2019-01-15 20:22:28
Sender: Dr. Iair Arcavi
Reporting Group: None     Discovery Data Source: None

Iair Arcavi report/s the discovery of a new astronomical transient.

IAU Designation: AT 2019th
Discoverer internal name: ZTF19aabimbg
Coordinates (J2000): RA = 05:10:39.252 (77.66355) DEC = +17:36:45.07 (17.61252)
Discovery date: 2019-01-08 04:28:43.000 (JD=2458491.6866088)

Remarks: We report the discovery of ZTF19aabimbg in the public ZTF alert stream retrieved via MARS ( The object displayed a ~5 magnitude rise from the previous non-detection one night before discovery, followed by a rapid decline of ~1 magnitude in four days. The object appears hostless.


Discovery (first detection):
Discovery date: 2019-01-08 04:28:43.000
Flux: 15.04 ABMag
Filter: g-Sloan
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2019-01-07 04:57:13
Limiting flux: 20.32 ABMag
Filter: r-Sloan
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Reported as a detection with a 0.2 mag error.

Details of the new object can be viewed here: