TNS Astronomical Transient Report No. 262070 [ 2025TNSTR2641....1H ]
Date Received (UTC): 2025-07-10 23:52:03
Date made public:
Sender: Lei Hu
Reporting Group: None Discovery Data Source: None
Lei Hu (CMU), Yuhan Chen (UCB), Lifan Wang (TAMU), Haojing Yan (University of Missouri), Bangzheng Sun (University of Missouri), Tianqing Zhang (Pitt) report/s the discovery of a new astronomical transient.
IAU Designation: AT 2025qtj
Discoverer internal name: 20250708F150W013718007m082350127
Coordinates (J2000): RA = 01:37:18.007 (24.325027087567) DEC = -08:23:50.13 (-8.3972574835849)
Discovery date: 2025-07-08 21:36:37.000 (JD=2460865.4004282)
Host redshift: 1.43
Remarks: We report on the detection of a transient candidate in JWST observations of WJ013719-08284. It was discovered in NIRCam observations of GO Program 6882 (PI: Seiji Fujimoto) using SFFT image subtraction code. We used archival NIRCam data provided by GO Program 2282 (PI: Dan Coe) as reference. The transient search is part of JWST Archival Research Program 5965 (JCAST; PIs: Lei Hu & Lifan Wang).
Photometry
Discovery (first detection):
Discovery date: 2025-07-08 21:36:37.000
Flux: 27.79 ABMag
Filter: F150W-JWST
Instrument: NIRCam
Telescope: James Webb Space Telescope
Last non-detection:
Archival info: DSS
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025qtj
Date Received (UTC): 2025-07-10 23:52:03
Date made public:
Sender: Lei Hu
Reporting Group: None Discovery Data Source: None
Lei Hu (CMU), Yuhan Chen (UCB), Lifan Wang (TAMU), Haojing Yan (University of Missouri), Bangzheng Sun (University of Missouri), Tianqing Zhang (Pitt) report/s the discovery of a new astronomical transient.
IAU Designation: AT 2025qtj
Discoverer internal name: 20250708F150W013718007m082350127
Coordinates (J2000): RA = 01:37:18.007 (24.325027087567) DEC = -08:23:50.13 (-8.3972574835849)
Discovery date: 2025-07-08 21:36:37.000 (JD=2460865.4004282)
Host redshift: 1.43
Remarks: We report on the detection of a transient candidate in JWST observations of WJ013719-08284. It was discovered in NIRCam observations of GO Program 6882 (PI: Seiji Fujimoto) using SFFT image subtraction code. We used archival NIRCam data provided by GO Program 2282 (PI: Dan Coe) as reference. The transient search is part of JWST Archival Research Program 5965 (JCAST; PIs: Lei Hu & Lifan Wang).
Photometry
Discovery (first detection):
Discovery date: 2025-07-08 21:36:37.000
Flux: 27.79 ABMag
Filter: F150W-JWST
Instrument: NIRCam
Telescope: James Webb Space Telescope
Last non-detection:
Archival info: DSS
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025qtj