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Observation by fromanov: On 2025-09-13 I confirmed the new bright...

Uploaded by

BAA Comet Section

Observer

fromanov

Observed

2025 Sep 13 - 00:00

Uploaded

2025 Sep 27 - 09:40

Objects

C/2025 R2

Planetarium overlay









Constellation

Virgo

Field centre

RA: 13h12m
Dec: -09°40'
Position angle: +4°39'

Field size

0°18' × 0°20'

Full filename

2025r2/2025r2_20250913_fromanov.jpg

Target name

C/2025 R2

Title

On 2025-09-13 I confirmed the new bright comet SWAN25B remotely using iTelescope.Net T59 (0.51-m f/6.8 reflector + CCD) located at the Siding Spring Observatory, Australia. I measured: magnitude of the coma = +8.9 mag., coma diameter = 2 arcminutes with a straight tail (which becomes wider away from the coma) at least 18 arcminutes in length (to the edge of the frame), PA = 112 degrees. My astrometric data: SWAN25B C2025 09 13.36290913 12 24.128-09 42 11.79 Q62 SWAN25B C2025 09 13.36554513 12 24.836-09 42 15.51 Q62 SWAN25B C2025 09 13.36819213 12 25.499-09 42 19.53 8.9 G Q62 Images: stacked 3x10 sec. (RGB) and single 60 sec. (Luminance filter).

About this image
On 2025-09-13 I confirmed the new bright comet SWAN25B remotely using iTelescope.Net T59 (0.51-m f/6.8 reflector + CCD) located at the Siding Spring Observatory, Australia. I measured: magnitude of the coma = +8.9 mag., coma diameter = 2 arcminutes with a straight tail (which becomes wider away from the coma) at least 18 arcminutes in length (to the edge of the frame), PA = 112 degrees. My astrometric data: SWAN25B C2025 09 13.36290913 12 24.128-09 42 11.79 Q62 SWAN25B C2025 09 13.36554513 12 24.836-09 42 15.51 Q62 SWAN25B C2025 09 13.36819213 12 25.499-09 42 19.53 8.9 G Q62 Images: stacked 3x10 sec. (RGB) and single 60 sec. (Luminance filter).
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