Astronomy Picture of the Day
    

Keyword: Janus
Ìàëåíüêèé ñïóòíèê Ýïèìåòåé Small Moon Epimetheus
29.04.2005

Small saturnian moon Epimetheus (ep-ee-MEE-thee-us) is at most 116 kilometers across. Its cratered surface and irregular shape are highlighted by dramatic shadows in this composite close-up image from the Cassini spacecraft. However, orbiting 91,000 kilometers above Saturn's cloud tops, Epimetheus is not alone.



Ñïóòíèêè Ñàòóðíà çà ïðåäåëàìè åãî êîëåö Moons Beyond the Rings of Saturn
12.07.2010

What's happened to that moon of Saturn? Nothing -- Saturn's moon Rhea is just partly hidden behind Saturn's rings. In April, the robotic Cassini spacecraft now orbiting Saturn took this narrow-angle view looking across the Solar System's most famous rings.



ßíóñ: êàðòîôåëüíûé ñïóòíèê Ñàòóðíà Janus: Potato Shaped Moon of Saturn
7.11.2006

Janus is one of the stranger moons of Saturn. First, Janus travels in an unusual orbit around Saturn where it periodically trades places with its sister moon Epimetheus, which typically orbits about 50 kilometers away. Janus, although slightly larger than Epimetheus, is potato-shaped and has a largest diameter of about 190 kilometers.



Ýïèìåòåé è ßíóñ: âåðíûå ñïóòíèêè Ñàòóðíà Epimetheus and Janus: Interchangeable Moons of Saturn
2.11.2005

These two moons change places. Epimetheus and Janus, two small moons of Saturn, actually switch positions as they orbit their home planet. The orbital radii of the moons are strangely separated by less than the radii of the moons themselves: about 50 kilometers. One moon orbits Saturn well ahead of the other, at first.





 < December 2024  
Mo Tu We Th Fr Sa Su






1
2345678
9101112131415
16171819202122
23242526272829
3031




January
February
March
April
May
June
July
August
September
October
November
December