Home » News & Blogs » Interstellar comet 2I/Borisov comes from a binary star 13 light-years away, say astronomers
Bookmark and Share
Physics World Blog

Interstellar comet 2I/Borisov comes from a binary star 13 light-years away, say astronomers

11 Oct 2019, 10:50 UTC
Interstellar comet 2I/Borisov comes from a binary star 13 light-years away, say astronomers Gemini Observatory/NSF/AURA

Comet 2I/Borisov, recently confirmed as a visitor from interstellar space, could have its origin in a star system 13 light-years away, say astronomers. Extrapolating from the relatively scant orbital parameters determined so far, and accounting for the gravitational effects of hundreds of nearby stars, astronomers in Poland have projected the comet’s path back in time. They found that, about one million years ago, 2I/Borisov and the double star system Kruger 60 passed within a few light-years of each other at a very low relative velocity. Observations of the comet as it travels through the solar system will improve our understanding of its orbit and allow the astronomers to test their hypothesis more thoroughly.

Latest Vodcast

Latest Podcast

Advertise PTTU

NASA Picture of the Day

Astronomy Picture of the Day

astronomy_pod