Astronomers Thrill at Giant Comet Flying into Our Solar System – Scientific American

The internet is bubbling with news stories about comet C/2014 UN271 (Bernardinelli-Bernstein). Current size estimates are that the comet is about 100-370 km across – much bigger than the previous size winner, Hale-Bopp in 1997 at 60km. There are big uncertainties at the moment, with C/2014 UN271 some 20 AU away. Those uncertainties will narrow, and we’ve plenty of time to do that it won’t reach perihelion until 2031.

Unfortunately its closest approach will be around 11 AU, with a currently estimated visual magnitude of about 14-15… so not a naked eye object and likely hard to see except for advanced amateurs.

Even so, it is so unusual to have an object of this size enter the outer solar system, it will be worth tracking this story over the next decade… who knows what C/2014 UN271 will tell us about the frigid wastes of the Oort cloud?

See more at: Astronomers Thrill at Giant Comet Flying into Our Solar System – Scientific American

Published by Lee J. Russell

Often having a Cold War influence, my stories explore desperate situations that take people to their physical and emotional limits. Find me on Twitter as @LeeJ_Russell.

Leave a Reply

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: