Discovery certificate for object 2021ibd
TNS Astronomical Transient Report No. 105112 [ 2021TNSTR1038....1A ]

Date Received (UTC): 2021-04-04 01:32:58
Sender: Dr. Ismael Perez-Fournon
Reporting Group: SGLF     Discovery Data Source: ZTF

C. Jimenez Angel, I. Perez-Fournon, F. Poidevin (IAC & ULL), R. Shirley (Univ. of Southampton), R. Marques-Chaves (Univ. of Geneva), S. Geier (GRANTECAN & IAC), Y. Shu (MPA), S. Rodney, J. Roberts-Pierel (Univ. of South Carolina), A. Bolton (NSF's NOIRLab), S. Chakrabarti, P. Craig, and B. Alamiri (RIT) report/s the discovery of a new astronomical transient.

IAU Designation: AT 2021ibd
Discoverer internal name: ZTF21aarabwh
Coordinates (J2000): RA = 18:40:20.156 (280.083983) DEC = +61:33:30.44 (61.558456)
Discovery date: 2021-03-21 09:26:05.000 (JD=2459294.8931134)


Remarks: Data were provided by the Zwicky Transient Facility (https://www.ztf.caltech.edu) and processed through the Lasair (https://lasair.roe.ac.uk), ALeRCE (https://alerce.online), Fink (https://fink-broker.org), ANTARES (https://antares.noirlab.edu), and MARS (https://mars.lco.global) brokers and our SGLF ZTF database and filters.

Photometry

Discovery (first detection):
Discovery date: 2021-03-21 09:26:05.000
Flux: 20.618 ABMag
Filter: g-PTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2021-03-18 12:16:18
Limiting flux: 20.634 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin


Details of the new object can be viewed here: https://www.wis-tns.org/object/2021ibd