![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Iapetus_706_1419_1.jpg/640px-Iapetus_706_1419_1.jpg&w=640&q=50)
Iapetus (buwan)
Buwan any Saturn / From Wikipedia, the free encyclopedia
Ang Iapetus ay isang buwan sa Saturn.
Agarang impormasyon Pagkatuklas, Natuklasan ni ...
![]() Photomosaic of Cassini images taken Dec. 31, 2004, showing the dark Cassini Regio and its border with the bright Roncevaux Terra, several large craters (Falsaron above center, Turgis, the largest, at right), and the equatorial ridge (the Toledo and Tortelosa Montes) | |
Pagkatuklas | |
---|---|
Natuklasan ni | G. D. Cassini |
Natuklasan noong | October 25, 1671 |
Designasyon | |
Ibang designasyon | Saturn VIII |
Pang-uri | Iapetian, Japetian |
Orbital characteristics | |
Semi-major axis | 3560820 km |
Eccentricity | 0.0286125 [1] |
Orbital period | 79.3215 d |
Average orbital speed | 3.26 km/s |
Inclination |
|
Satellite of | Saturn |
Pisikal na katangian | |
Dimensiyon | 1,492.0 × 1,492.0 × 1,424 km [3] |
Mean radius | 734.5±2.8 km [3] |
Pang-ibabaw na sukat | 6700000 km2 |
Mass | (1.805635±0.000375)×1021 kg [4] |
Mean density | 1.088±0.013 g/cm³ [3] |
Surface gravity | 0.224 m/s2 |
Escape velocity | 0.573 km/s |
Rotation period | 79.3215 d (synchronous) |
Axial tilt | zero |
Albedo | 0.05–0.5[5] |
Temperature | 90–130 K |
Apparent magnitude | 10.2–11.9[6] |
Isara