DRAFT
2026-03-30 00:08:29
Type: Object/s-Data/Analysis
Bibcode: 2026TNSAN..90....1H
POISE Observations of the Rapidly Rising 2026hkg
Authors: Willem Hoogendam (Hawaii), Nidia Morrell (Carnegie), Chris Burns (Carnegie), Chris Ashall (Hawaii), Eric Hsiao (FSU), Cameron Pfeffer (Hawaii), Huangfei Xiao (FSU)
Source Group: POISE
Abstract:
The POISE Collaboration reports a ~1 mag per day rise for the flash-ionized SN II 2026hkg. We report intranight rises of 0.4mags over 7 hours on UT 2026-03-28 and 0.1 mags over 2 hours on UT 2026-03-29. Continued follow-up observations are highly encouraged. The latest magnitudes indicate SN 2025hkg is now brighter than 15th magnitude.

Observations from the Precision Observations of Infant Supernovae Explosions Collaboration using the Swope telescope reveal that SN 2026hkg is fast-rising. Five epochs of uBVgri imaging were taken on UT 2026-03-28 (2 images separated by 7 hours) and 2026-03-29 (3 images at 2-hour cadence). We report intranight rises of 0.4mags over 7 hours on UT 2026-03-28 and 0.1 mags over 2 hours on UT 2026-03-29. Continued follow-up observations are highly encouraged, especially spectroscopy. 

Show current TNS values
Catalog Name Reported RA Reported DEC Reported Obj-Type Reported Redshift Host Name Host Redshift Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2026hkg [ATLAS26djy] 09:03:36.117 -67:58:13.34 SN II 0.004733 09:03:36.117 -67:58:13.34 SN II 0.004733

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