3I Atlas
What is 3I Atlas ?
Real-time tracking of comet 3I/ATLAS - the third confirmed interstellar visitor. This interstellar comet, originating from outside the solar system, was discovered in July 2025 and is traversing the solar system along a hyperbolic trajectory. This platform provides real-time orbit visualization, observation guides, scientific timelines, and the latest updates on 3I/ATLAS, making it an essential tool for astronomy enthusiasts and researchers.
- Recording time：2025-12-15
- Is it free：
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(2025-11-01 - 2025-11-30)Website Latest Traffic Status
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3I Atlas Core Features
Real-time tracking and visualization of the 3I/ATLAS orbit
Detailed observation guide and equipment recommendations for interstellar comets
Complete scientific timeline and key milestone events
News, images, and video media library for 3I/ATLAS
Multi-level scientific content and educational materials
3I Atlas Subscription Plan
FAQ from 3I Atlas
What is the 3I/ATLAS comet?
3I/ATLAS is the third confirmed interstellar comet visiting the solar system. Discovered in July 2025, it originates from outside the solar system and follows a hyperbolic trajectory that will cause it to ultimately return to interstellar space.
How to observe the 3I/ATLAS comet?
Observing 3I/ATLAS requires a telescope with at least a 200mm aperture, as it is very faint. The best time for observation is in the early morning, and a dark observation location is essential.
When is the best time to observe 3I/ATLAS?
The best period to observe 3I/ATLAS is from October 2025 to January 2026, with December 19, 2025, being the day it is closest to Earth.
Why is 3I/ATLAS classified as an interstellar object?
Comet 3I/ATLAS is classified as an interstellar object due to its hyperbolic trajectory (eccentricity 6.3), proving it originates from outside the solar system. Unlike solar system comets, 3I/ATLAS will never return after this passage, making it a unique visitor from another stellar system.
How does 3I/ATLAS compare to other interstellar visitors?
3I/ATLAS is the third confirmed interstellar object after `Oumuamua and Borisov. Unlike previous visitors, 3I/ATLAS exhibits significant cometary activity, with a developing coma and tail, providing scientists with an unprecedented opportunity to study the composition and behavior of active interstellar comets during its passage through the solar system.
What is the scientific significance of 3I/ATLAS?
The scientific significance of 3I/ATLAS lies in its status as an active interstellar comet, offering insights into the conditions of other stellar systems. By studying the composition, orbital dynamics, and gas release patterns of 3I/ATLAS, astronomers can gain an understanding of the formation processes and material composition in the galactic disc region from which this interstellar visitor originated billions of years ago.
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