TNS Astronomical Transient Report No. 256874 [ 2025TNSTR1986....1J ]

Date Received (UTC): 2025-05-27 06:59:46
Date made public:
Sender: YSE_Bot1
Reporting Group: YSE     Discovery Data Source: Pan-STARRS

D. O. Jones (UC Santa Cruz), K. D. French (Carnegie, Illinois), A. Agnello, Z. Ansari, N. Arendse, C. Gall, C. Grillo, S. H. Bruun, C. Hede, J. Hjorth, L. Izzo, H. Korhonen, S. Raimundo, D. Kodi Ramanah, A. Sarangi, R. Wojtak, H. Pfister (DARK, U Copenhagen), K. Auchettl (DARK, UC Santa Cruz, U Melbourne), K. C. Chambers, M. E. Huber, E. A. Magnier, T. J. L. de Boer, J. R. Fairlamb, C. C. Lin, R. J. Wainscoat, T. Lowe, G. Paek, A. S. B. Schultz, P. Minguez (IfA, Hawaii), A. Engel, A. Gagliano, G. Narayan, M. Soraisam (Illinois), Q. Wang (JHU), A. Rest (JHU, STScI), S. J. Smartt, K. W. Smith (Oxford / QUB), C. R. Angus (QUB), K. Alexander, P. Blanchard, L. DeMarchi, A. Hajela, W. Jacobson-Galan, R. Margutti, D. Matthews, C. Stauffer, M. Stroh (Northwestern), M. Drout (U Toronto), D. A. Coulter, G. Dimitriadis, R. J. Foley, T. Hung, C. D. Kilpatrick, C. Rojas-Bravo, M. R. Siebert (UC Santa Cruz), E. Ramirez-Ruiz (UC Santa Cruz, DARK) report/s the discovery of a new astronomical transient.

IAU Designation: AT 2025mcb
Discoverer internal name: PS25cyj
Coordinates (J2000): RA = 12:28:48.102 (187.200425071) DEC = +13:19:22.08 (13.3227993362)
Discovery date: 2025-05-26 08:43:39.360 (JD=2460821.86365)



Photometry

Discovery (first detection):
Discovery date: 2025-05-26 08:43:39.360
Flux: 20.52 ABMag
Filter: i-P1
Instrument: GPC1
Telescope: Pan-STARRS1

Last non-detection:
Archival info: DSS

Details of the new object can be viewed here: https://www.wis-tns.org/object/2025mcb