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Epimetheus (buwan)
From Wikipedia, the free encyclopedia
Ang Epimetheus (Kastila: Epimeteo) ay isang panloob na buwan ng Saturno. Kilala rin ito sa ngalang Saturno XI. Ito ay ipinangalan mula sa tauhang pangmitolohiyang si Epimeteo (Epimetheus), kuya ni Prometeo.
Agarang impormasyon Pagkatuklas, Natuklasan ni ...
![]() Kuha ng Cassini noong Disyembre 3, 2007 | |
Pagkatuklas | |
---|---|
Natuklasan ni | Richard Walker |
Natuklasan noong | December 18, 1966 |
Orbital characteristics[1] | |
Epoch 31 December 2003 (JD 2453005.5) | |
Semi-major axis | 151 410 ± 10 km |
Eccentricity | 0.0098 |
Orbital period | 0.694 333 517 d |
Inclination | 0.351 ± 0.004° to Saturn's equator |
Satellite of | Saturn |
Pisikal na katangian | |
Dimensiyon | 135 × 108 × 105 km[2] |
Mean radius | 56.7 ± 3.1 km[2] |
Pang-ibabaw na sukat | ~40 000 km² |
Volume | ~760 000 km³ |
Mass | 5.304 ± 0.013 ×1017 kg[1] |
Mean density | 0.69 ± 0.11 g/cm³ |
Surface gravity | ~0.0078 m/s2 |
Escape velocity | ~0.032 km/s |
Rotation period | synchronous |
Axial tilt | zero |
Albedo | 0.73 ± 0.03 (geometric)[3] |
Temperature | ~78 K |
Isara