Iapetus (muin)
 Photomosaic of Cassini images taken on 31 December 2004. It shows 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). | |
| Discovery | |
|---|---|
| Discovered bi | G. D. Cassini |
| Discovery date | October 25, 1671 |
| Designations | |
| Saturn VIII | |
| Adjectives | Iapetian, Japetian |
| Orbital chairactereestics | |
| 3560820 km | |
| Eccentricity | 0.0286125 [1] |
| 79.3215 d | |
Average orbital speed | 3.26 km/s |
| Inclination |
|
| Satellite o | Saturn |
| Pheesical chairacteristics | |
| Dimensions | 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] |
| 0.224 m/s2 | |
| 0.573 km/s | |
| 79.3215 d (synchronous) | |
| zero | |
| Albedo | 0.05–0.5[5] |
| Temperatur | 90–130 K |
| 10.2–11.9[6] | |
Iapetus (Greek: Ιαπετός), or occasionally Japetus,[7] is the third-lairgest naitural satellite o Saturn, eleivent-lairgest in the Solar Seestem,[8]
References
[eedit | eedit soorce]- ↑ "Pseudo-MPEC for Saturn VIII". Archived frae the original on 22 Februar 2012. Retrieved 10 Julie 2016.
- ↑ Jacobson, R.A. (2009) SAT317 (17 December 2009). "Planetary Satellite Mean Orbital Parameters". JPL/NASA. Retrieved 15 Januar 2011.
- ↑ a b c Roatsch, T.; Jaumann, R.; Stephan, K.; Thomas, P. C. (2009). "Cartographic Mapping of the Icy Satellites Using ISS and VIMS Data". Saturn from Cassini-Huygens. pp. 763–781. doi:10.1007/978-1-4020-9217-6_24. ISBN 978-1-4020-9216-9.
- ↑ 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. (December 2006). "The Gravity Field of the Saturnian System from Satellite Observations and Spacecraft Tracking Data". The Astronomical Journal. 132 (6): 2520–2526. Bibcode:2006AJ....132.2520J. doi:10.1086/508812.
- ↑ Williams, David R. "Saturnian Satellite Fact Sheet". NASA. Retrieved 4 November 2007.
- ↑ Observatorio ARVAL (15 Apryle 2007). "Classic Satellites of the Solar System". Observatorio ARVAL. Archived frae the original on 22 October 2013. Retrieved 17 December 2011.
- ↑ Lassell, William (14 Januar 1848). "Satellites of Saturn". Monthly Notices of the Royal Astronomical Society. 8 (3): 42–43. Bibcode:1848MNRAS...8...42L. doi:10.1093/mnras/8.3.42.
- ↑ The muins mair massive than Iapetus are: the Muin, the 4 Galilean muins (Ganymede, Callisto, Io, an Europa), Titan, Rhea, Titania, Oberon, an Triton. See JPLSSD.