Discovery certificate for object 2003md
TNS Astronomical Transient Report No. 38164 [ 2019TNSTR1034....1B ]

Date Received (UTC): 2019-06-19 15:31:58
Sender: Mr. Richard Nowell
Source Group: None

Sylvia Beer report/s the discovery of a new astronomical transient.

IAU Designation: AT 2003md
Coordinates (J2000): RA = 15:04:04.155 (226.017311) DEC = +08:36:26.27 (8.607296)
Discovery date: 2003-03-31 08:13:14 (JD=2452729.8425231)

Potential host galaxy: SDSS J150404.51+083619.9
Host redshift: 0.091334

Remarks: This transient was first noticed by Sylvia Beer on the Galaxy Zoo website here: https://www.zooniverse.org/projects/zookeeper/galaxy-zoo/talk/subjects/34060616. The transient is shown as a galaxy in SDSS J150404.12+083625.9 (http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237662264858443954) and has 'unreliable photometry'. It is not present though in the DECaLS or Pan-STARRS surveys from a decade later.

Photometry

Discovery (first detection):
Discovery date: 2003-03-31 08:13:14
Flux: 18.91 ABMag
Filter: r-Sloan
Instrument: SDSS-Spec
Telescope: Sloan Digital Sky Survey

Remarks: The r-band Apparent magnitude was calculated by Richard Nowell using APT and reference star: SDSS J150404.24+083549.7 http://skyserver.sdss.org/dr14/en/tools/explore/Summary.aspx?id=1237662264858443957. The r-band Absolute magnitude of -19.12 was also calculated.

Last non-detection:
Archival info: SDSS

Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2003md