Recently Discovered Planet Nine Added to Star Walk Astronomy Guide

In recent news you may have heard of the discovery of Planet Nine, a a hypothetical large planet in the far outer Solar System, with an estimated mass of about 10 times that of Earth, a diameter two to four times larger than that of Earth, and a highly elliptical orbit so far away that it could take it 15,000 years to orbit the Sun.

The news caused huge excitement in astronomy enthusiast community. We couldn’t resist adding it to Star Walk 2. We reached out to the authors of this discovery, Konstantin Batygin and Michael E. Brown of the California Institute of Technology, who said they used and loved Star Walk and were happy to help.

In Star Walk 2, Planet Nine is for the first time featured in an interactive space atlas. It has the most accurate estimated trajectory to date, and all important facts and figures, such as mass, radius, distance from the Sun, and more.

See Planet Nine for the first time in Star Walk 2 now! Available on iOS and Android