Massive comet from the edge of solar system is showing the first signs of activity

Unusually big comet C/2014 UN271 (also called Bernardinelli-Bernstein) is coming to the inner solar system from the Oort cloud. Analysis of its orbit shows that the perihelion (furthest point from the Sun) could be as far as 7 144 AU. In 2031 it should come at the closest point to the Sun - to about 11 AU. Astronomers currently estimate size of C/2014 UN271 to be about 200 km across.

C/2014 UN271 orbit

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