Newly discovered SWAN comet in the morning sky Nick James 03 Apr 2025 05:02 UTC

On April 1st Michael Mattiazzo reported a probable comet in SWAN data
with a position in Pegasus. I performed a search around the rough
position on the morning of April 2 but didn't find anything.
Subsequently Qicheng Zhang found the comet in images he had taken using
a 40mm refractor on April 2.51. This allowed Bill Gray to compute an
ephemeris and Mattazzio then found a precovery image from March 30.22.

For now, this comet doesn't have an official designation but you can get
an ephemeris from here:

https://www.projectpluto.com/swan.htm

I imaged it this morning from Chelmsford in bright twilight as it
cleared the roof of my house.

http://nickdjames.com/Comets/2025/20250402/swan25f_20250403_041715_ndj.jpg

Michael Jaeger reports a total magnitude of 10.0.

Nick.