SATURN’S MOON

Oct. 10, 2019

The International Astronomical Union’s Minor Planet Center confirmed 20 new moons orbiting Saturn, making it the planet with the most moons in our Solar System, at 82.

About:

  • The 20 had been discovered by Scott S Sheppard of the Carnegie Institution for Science. Until their confirmation, the planet with the most moons was Jupiter, at 79.

  • Each of the newly discovered objects in orbit around Saturn is about 5km (three miles) in diameter; 17 of them orbit the planet "backwards". This is known as a retrograde direction. The other three moons orbit in a prograde direction - the same direction as Saturn rotates.

  • A count of the moons listed on the NASA website shows that our Solar System’s planets together have 205 confirmed moons now.

  • Saturn and Jupiter, with 161 between them, account for nearly 80% of these. Another 20% are orbiting Uranus (27) and Neptune (14). Of the remaining three moons, one is Earth’s own while the other two are with Mars.