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Interstellar comet · 2I

2I/Borisov

Size~975 m
Speed~177,000 km/h
Eccentricity3.36 (unbound)
Found30 Aug 2019

The first confirmed interstellar comet: it formed around another star.

In March 2020 Hubble saw signs that a fragment had broken off its nucleus.

Sources

  1. NASA Science, Comet 2I/Borisov
  2. JPL Small-Body Database (orbital elements, physical parameters)
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