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Mission Statement

Welcome to the website for coordinating observations of the recently discovered interstellar object (ISO) 3I/ATLAS! Our intention is to provide a central website for information regarding this ISO. We encourage and facilitate the acquisition of observations and promote collaborations between researchers.

Recent Updates

July 3, 2025

3I/ATLAS was confirmed to have interstellar origins.
Time to Perihelion
 
Mailing List

We are maintaining an email list serv for sharing occasional updates regarding the behavior of 3I/ATLAS and for making announcemenets for short-term transient events that may prompt follow-up observations. If you wish to be added to the list, please send your name, affiliation, and preferred email address through the Email Sign-Up Form.