Discovery certificate for object 2003mh
TNS Astronomical Transient Report No. 68922 [ 2020TNSTR1136....1T ]

Date Received (UTC): 2020-04-26 22:40:57
Sender: Ms. Ine Theunissen
Reporting Group: None     Discovery Data Source: None

Ine Theunissen-Limpens report/s the discovery of a new astronomical transient.

IAU Designation: AT 2003mh
Coordinates (J2000): RA = 11:36:11.226 (174.046775718) DEC = +11:48:50.40 (11.813999465)
Discovery date: 2003-03-31 04:49:02.000 (JD=2452729.7007176)

Potential host galaxy: IC 2942
Host redshift: 0.031745

Remarks: This transient was first discovered by Ine Theunissen in the Legacy Survey Sky Viewer and discussed on the Galaxy Zoo website here: https://www.zooniverse.org/projects/zookeeper/galaxy-zoo/talk/1269/1203627. Richard Nowell also took part in the discussion. In the SDSS database, the transient is categorised as a star. However, in a later survey DECaLS, no star is visible.

Photometry

Discovery (first detection):
Discovery date: 2003-03-31 04:49:02.000
Flux: 19.34 ABMag
Filter: r-Sloan
Instrument: SDSS-Spec
Telescope: Sloan Digital Sky Survey

Remarks: The r-band Apparent magnitude was taken from the SDSS Skyserver DR14. The r-band Absolute magnitude of -16.40 was calculated by Ine Theunissen.

Last non-detection:
Archival info: SDSS

Details of the new object can be viewed here: https://www.wis-tns.org/object/2003mh