TNS Astronomical Transient Report No. 134750 [ 2022TNSTR.218....1T ]

Date Received (UTC): 2022-01-27 09:01:43
Date made public:
Sender: Richard Nowell
Reporting Group: None     Discovery Data Source: None

Ernest Jude Tiu report/s the discovery of a new astronomical transient.

IAU Designation: AT 2017khb
Coordinates (J2000): RA = 13:01:47.889 (195.449537) DEC = -00:47:49.89 (-0.797193)
Discovery date: 2017-02-21 15:24:58.000 (JD=2457806.142338)

Potential host galaxy: DESI 39627769885234315
Host redshift: 0.087

Remarks: This transient was first discovered by Ernest Jude Tiu using the Galaxy Zoo website here: https://www.zooniverse.org/projects/zookeeper/galaxy-zoo/talk/1269/1766180?comment=3802817 .

Photometry

Discovery (first detection):
Discovery date: 2017-02-21 15:24:58.000
Flux: 20.27 ABMag
Filter: z-HSC
Instrument: HSC
Telescope: Subaru

Remarks: The z-band Apparent magnitude was calculated by Richard Nowell using AstroImageJ and Aperture Photometry Tool. The reference star used is DESI 39627769885233992. The z-band Absolute magnitude -17.69 was also calculated.

Last non-detection:
Archival info: SDSS

Details of the new object can be viewed here: https://www.wis-tns.org/object/2017khb