Comet
2I/Borisov
TypeComet
Mass~1 × 10¹² kg
Diameter0.8 km
Orbital RadiusInterstellar trajectory
Known Moons0
Surface Gravity~0.0001 m/s²
Average Temp-70 °C
AtmosphereH2O, CO (coma)
Discovered ByGennady Borisov
Discovery Year2019
About 2I/Borisov
The first known interstellar comet, confirmed as a visitor from another star in 2019. Extremely rich in carbon monoxide. Broke apart near perihelion.
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