Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J00481888+0759006

PSN J00481888+0759006   2025 08 17.6270*  00 48 18.88 +07 59 00.6  19.6 C                       5 0

2025 08 22.958

Possible supernova AT 2025umq (in SDSS J004819.14+075856.8) discovered at iTelescope.Net T59 (0.51-m f/6.8 reflector + CCD) at Siding Spring Observatory, Australia, visible in 5 images with exposures of 300 seconds. Stacked image: https://www.wis-tns.org/system/files/uploaded/F.%20D.%20Romanov/tns_2025umq_atrep_266553_F._D._Romanov.jpg Follow-up observation using the Liverpool Telescope on 2025-08-19.159000 UT: position 00:48:18.875 +07:59:00.67, magnitude 20.3 r, stacked image: https://www.wis-tns.org/system/files/uploaded/F.%20D.%20Romanov/tns_2025umq_atrep_266598_F._D._Romanov.jpg Filipp Romanov (AAVSO).

2025 08 28.4

More information about the discovery, photometry and spectroscopic classification of SN 2025umq as Type Ia supernova is available in the ATel #17361 https://www.astronomerstelegram.org/?read=17361