🌌 Comet C/2025 R2 (SWAN) to Fly By Earth on October 21: How to Spot It
A rare celestial event is set to unfold as Comet C/2025 R2 (SWAN) makes its closest approach to Earth on October 21, 2025. Discovered on September 11, 2025, by amateur astronomer Vladimir Bezugly using the SWAN instrument aboard NASA's Solar and Heliospheric Observatory (SOHO), this long-period comet has been captivating skywatchers worldwide
🔭 Viewing Details
Closest Approach: October 21, 2025
Distance from Earth: Approximately 0.26 AU (38.9 million kilometers)
Apparent Magnitude: Around +5.6, potentially visible to the naked eye under dark skies
Best Viewing Time: Shortly after sunset, looking towards the southwestern horizon
Optimal Conditions: Clear, dark skies away from city lights
📍 How to Find It
On October 21, 2025, Comet SWAN will be positioned in the constellation Serpens, approximately 5 degrees to the upper left of the star Xi Serpentis. Using a stargazing app or a sky map, locate this star to pinpoint the comet's location. As the evening progresses, the comet will move towards the "teapot" asterism in the constellation Sagittarius, making it easier to track
🌠 Why It’s Special
This event is particularly significant as it coincides with the peak of the Orionid meteor shower, which is expected to reach its maximum around October 21. The combination of two bright comets and the meteor shower offers a unique opportunity for skywatchers to witness multiple celestial phenomena in a single evening
❓ Frequently Asked Questions (FAQ)
1. Can I see Comet SWAN without a telescope?
Yes, under optimal dark sky conditions, Comet SWAN may be visible to the naked eye. However, using binoculars or a small telescope will enhance the viewing experience and make the comet's features more distinct.
2. What is the best time to observe the comet?
The best time to observe Comet SWAN is shortly after sunset, when it is positioned in the southwestern sky. Ensure you have a clear view of the horizon and minimal light pollution.
3. Where is the best place to watch from Bengaluru?
In Bengaluru, consider visiting areas with minimal light pollution, such as Nandi Hills or the outskirts of the city, for optimal viewing conditions.
4. Will the comet be visible after October 21?
While October 21 marks the closest approach, Comet SWAN will remain visible in the sky for several days following this date. Its brightness may gradually decrease, so early observation is recommended.
Published on : 17th October
Published by : Selvi
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