Interstellar object

2I/Borisov

2I/Borisov is a comet from another star, on its way out of the Solar System.

The first comet seen coming from another star, found on 29 August 2019 by Gennadiy Borisov, an amateur astronomer and telescope maker in Crimea.

Key facts

Catalogue

C/2019 Q4 (Borisov)

Closest to the Sun

2.01 au

How the map draws it

Drawn as a generic comet — the kind of thing, not this exact one · the tails are part of the drawing, not an observation: nobody has seen Borisov since September 2020.