TNS Astronomical Transient Report No. 259364 [ 2025TNSTR2316....1C ]
Date Received (UTC): 2025-06-20 18:47:27
Date made public:
Sender: TSST_COSMOS_bot
Reporting Group: TSST_COSMOS_3D Discovery Data Source: TSST_COSMOS_3D
D. A. Coulter, on behalf of the TSST and COSMOS-3D teams. report/s the discovery of a new astronomical transient.
IAU Designation: AT 2025ofq
Discoverer internal name: COSMOS_3D_422_510
Coordinates (J2000): RA = 10:00:17.295 (150.0720621) DEC = +02:11:13.21 (2.18700405)
Discovery date: 2025-05-05 00:00:00.000 (JD=2460800.5)
Host redshift: 2.804
Photometry
Discovery (first detection):
Discovery date: 2025-05-05 00:00:00.000
Flux: 27.5 ABMag
Filter: F200W-JWST
Instrument: NIRCam
Telescope: James Webb Space Telescope
Last non-detection:
Archival info: Other
Remarks: This source was not detected in Public Release IMaging for Extragalactic Research images (PRIMER; Cycle 1, GO 1837; https://primer-jwst.github.io/observations.html).
Details of the new object can be viewed here: https://sandbox.wis-tns.org/object/2025ofq
Date Received (UTC): 2025-06-20 18:47:27
Date made public:
Sender: TSST_COSMOS_bot
Reporting Group: TSST_COSMOS_3D Discovery Data Source: TSST_COSMOS_3D
D. A. Coulter, on behalf of the TSST and COSMOS-3D teams. report/s the discovery of a new astronomical transient.
IAU Designation: AT 2025ofq
Discoverer internal name: COSMOS_3D_422_510
Coordinates (J2000): RA = 10:00:17.295 (150.0720621) DEC = +02:11:13.21 (2.18700405)
Discovery date: 2025-05-05 00:00:00.000 (JD=2460800.5)
Host redshift: 2.804
Photometry
Discovery (first detection):
Discovery date: 2025-05-05 00:00:00.000
Flux: 27.5 ABMag
Filter: F200W-JWST
Instrument: NIRCam
Telescope: James Webb Space Telescope
Last non-detection:
Archival info: Other
Remarks: This source was not detected in Public Release IMaging for Extragalactic Research images (PRIMER; Cycle 1, GO 1837; https://primer-jwst.github.io/observations.html).
Details of the new object can be viewed here: https://sandbox.wis-tns.org/object/2025ofq