ScienceDownEast | ScienceDownEast Astrophotography | Comets | Comet-C2025-R2-SWAN | Comet C/2025 R2 (SWAN)
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Comet C/2025 R2 (SWAN) is a long-period comet first spotted on September 11, 2025 by amateur astronomer Vladimir Bezugly in publicly available images from the SWAN (Solar Wind Anisotropies) instrument aboard the SOHO spacecraft, before receiving an official designation from the IAU. It was already unusually bright (magnitude ~7.3) with a well-developed tail at the time of discovery, just hours from perihelion. Its orbit suggests a period of roughly 22,500 years, meaning this is likely its only visit to the inner solar system in recorded history.
[Source: Wikipedia, en.wikipedia.org/wiki/C/2025_R2_(SWAN); NASA APOD, apod.nasa.gov/apod/ap250918.html]
Total image time was 3 minutes.
Comet C/2025 R2 (SWAN) is a long-period comet first spotted on September 11, 2025 by amateur astronomer Vladimir Bezugly in publicly available images from the SWAN (Solar Wind Anisotropies) instrument aboard the SOHO spacecraft, before receiving an official designation from the IAU. It was already unusually bright (magnitude ~7.3) with a well-developed tail at the time of discovery, just hours from perihelion. Its orbit suggests a period of roughly 22,500 years, meaning this is likely its only visit to the inner solar system in recorded history.
[Source: Wikipedia, en.wikipedia.org/wiki/C/2025_R2_(SWAN); NASA APOD, apod.nasa.gov/apod/ap250918.html]
Total image time was 3 minutes.
| Moon Phase | Waxing Crescent | ||||
| Camera | ToupTek ATR2600C | ||||
| Optics | Skywatcher Esprit 120ED, 840 mm focal length, f/7 (120 mm aperture, APO triplet) | ||||
| Filter | Triad Quad | ||||
| Binning | 1x1 | ||||
| Date | 2025-10-25 | ||||
| PixInsight Processing |
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