Supernova SN 2025pht and its
progenitor
in
NGC 1637
This is the brightest
supernova of 2025, so far.
The supernova was discovered by ASAS-SN
on 29 June 2025, and classified as a Type II-P supernova on 3 July 2025.
More information and images
here (coming soon?) :
https://rochesterastronomy.org/sn2025/sn2025pht.html
All supernovae updates here:
https://rochesterastronomy.org/snimages/index.html
TNS [Transient Name Server]
entry for 2025ph: https://www.wis-tns.org/object/2025pht
Wikipedia page for host galaxy NGC 1637:
https://en.wikipedia.org/wiki/NGC_1637
NGC 1637 was also the home of the brightest supernova of 1999, SN 1999em.
The
candidate progenitor of SN 2025pht can be
found in the
Hubble Picture of the week
posted on 2 December 2024.
Note: In this image, north
is 21.9° right of vertical.
It has been rotated 90° clockwise from the original image.
The presumed progenitor has been cataloged in the Hubble Source Catalog for NGC 1637 as
MatchID 1150202 with coordinates RA 04:41:28.838 DEC -02:51:56.01
Further reading:
None yet
Page created: 29 June 2025
Last update: 3 July 2025
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