TNS Astronomical Transient Report No. 279353 [ 2025TNSTR4832....1S ]
Date Received (UTC): 2025-12-04 18:40:08
Date made public:
Sender: NGDEEP_Bot
Reporting Group: NGDEEP Discovery Data Source: NGDEEP
Magdalena Sammut on behalf of NGDEEP report/s the discovery of a new astronomical transient.
IAU Designation: AT 2023aefa
Coordinates (J2000): RA = 03:32:58.037 (53.2418229) DEC = -27:49:04.72 (-27.8179781)
Discovery date: 2023-02-02 00:00:00.000 (JD=2459977.5)
Potential host galaxy: NGDEEP+53.24192-27.81824
Remarks: We do not report a redshift due to unclear host identity
Photometry
Discovery (first detection):
Discovery date: 2023-02-02 00:00:00.000
Flux: 29.88 ABMag
Filter: F277W-JWST
Instrument: NIRCam
Telescope: James Webb Space Telescope
Last non-detection:
Archival info: Other
Remarks: This source was not detected in The Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey obs001 images taken on January 24, 2024 (NGDEEP; Cycle 1, 2079)
Details of the new object can be viewed here: https://www.wis-tns.org/object/2023aefa
Date Received (UTC): 2025-12-04 18:40:08
Date made public:
Sender: NGDEEP_Bot
Reporting Group: NGDEEP Discovery Data Source: NGDEEP
Magdalena Sammut on behalf of NGDEEP report/s the discovery of a new astronomical transient.
IAU Designation: AT 2023aefa
Coordinates (J2000): RA = 03:32:58.037 (53.2418229) DEC = -27:49:04.72 (-27.8179781)
Discovery date: 2023-02-02 00:00:00.000 (JD=2459977.5)
Potential host galaxy: NGDEEP+53.24192-27.81824
Remarks: We do not report a redshift due to unclear host identity
Photometry
Discovery (first detection):
Discovery date: 2023-02-02 00:00:00.000
Flux: 29.88 ABMag
Filter: F277W-JWST
Instrument: NIRCam
Telescope: James Webb Space Telescope
Last non-detection:
Archival info: Other
Remarks: This source was not detected in The Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey obs001 images taken on January 24, 2024 (NGDEEP; Cycle 1, 2079)
Details of the new object can be viewed here: https://www.wis-tns.org/object/2023aefa