TNS Astronomical Transient Report No. 259415 [ 2025TNSTR2316....1C ]
Date Received (UTC): 2025-06-20 19:14:52
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 2025ohn
Discoverer internal name: COSMOS_3D_8995
Coordinates (J2000): RA = 09:59:47.295 (149.947063) DEC = +02:04:22.59 (2.07294238)
Discovery date: 2025-05-05 00:00:00.000 (JD=2460800.5)
Host redshift: 0.888
Photometry
Discovery (first detection):
Discovery date: 2025-05-05 00:00:00.000
Flux: 26.6 ABMag
Filter: F115W-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/2025ohn
Date Received (UTC): 2025-06-20 19:14:52
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 2025ohn
Discoverer internal name: COSMOS_3D_8995
Coordinates (J2000): RA = 09:59:47.295 (149.947063) DEC = +02:04:22.59 (2.07294238)
Discovery date: 2025-05-05 00:00:00.000 (JD=2460800.5)
Host redshift: 0.888
Photometry
Discovery (first detection):
Discovery date: 2025-05-05 00:00:00.000
Flux: 26.6 ABMag
Filter: F115W-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/2025ohn