Observation by Mike Olason: On a nice clear morning of 2025 April 20...

Uploaded by

BAA Comet Section

Observer

Mike Olason

Observed

2025 Apr 20 - 11:34

Uploaded

2025 Apr 27 - 05:30

Objects

C/2025 F2

Full filename

2025f2/2025f2_20250420_1134_molason.jpg

Target name

C/2025 F2

Title

On a nice clear morning of 2025 April 20 UT, Comet C/2025 F2 (SWAN) was magnitude 9.8 as calculated from 4x20 second images thru a green filter in an aperture diameter of 3'. The comet coma was 2.5' wide, the tail was 2' long at a position angle of 313 degrees from the comet coma. The comet was at an altitude of 5.5 degrees just before the beginning of twilight and the Moon was only 56% illuminated. The ion tail is gone and the dust tail is not very impressive. When looking at the comet's magnitude, the comet has been very quiet since April 9 when it was magnitude 9.3, fading slowly as it approaches perihelion in its orbit on May 1.

About this image

Files associated with this observation

2025f2_20250420_1134_molason.jpg (272.8 kB)

Like this image

Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of work by third parties is expressly forbidden without the consent of the copyright holder. By submitting images to this online gallery, you grant the BAA permission to reproduce them in any of our publications.

Registered charity no. 210769
Registered company no. 117572

For more information including contact details, click here.

Our Terms of Use are here.

Our Privacy Policy is here.