Iapetus (buwan)
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 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] |
| Surface area | 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] |
Ang Iapetus ay isang buwan sa Saturn.
pinagmulan[baguhin | baguhin ang batayan]
- ↑ Pseudo-MPEC for Saturn VIII[patay na link]
- ↑ Jacobson, R.A. (2009) SAT317 (2009-12-17). "Planetary Satellite Mean Orbital Parameters". JPL/NASA. Hinango noong 2011-01-15.
- ↑ 3.0 3.1 3.2 Roatsch, Th.; Jaumann, R.; Stephan, K.; Thomas, P. C. (2009). "Cartographic Mapping of the Icy Satellites Using ISS and VIMS Data": 763–781. doi:10.1007/978-1-4020-9217-6_24.
- ↑ Jacobson, R. A.; Antreasian, P. G.; Bordi, J. J.; Criddle, K. E.; Ionasescu, R.; Jones, J. B.; Mackenzie, R. A.; Meek, M. C.; Parcher, D.; Pelletier, F. J.; Owen, Jr., W. M.; Roth, D. C.; Roundhill, I. M.; Stauch, J. R. (2006). "The Gravity Field of the Saturnian System from Satellite Observations and Spacecraft Tracking Data". The Astronomical Journal. 132 (6): 2520–2526. doi:10.1086/508812. ISSN 0004-6256.
- ↑ Williams, David R. "Saturnian Satellite Fact Sheet". NASA. Hinango noong 2007-11-04.
- ↑ Observatorio ARVAL (2007-04-15). "Classic Satellites of the Solar System". Observatorio ARVAL. Hinango noong 2011-12-17.
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