Enceladus
 Enceladus ke chhaapa Cassini orbiter, October 2015 me utaris rahaa | |||||||||||||
| Discovery | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Discovered by | William Herschel | ||||||||||||
| Discovery date | August 28, 1789 | ||||||||||||
| Designations | |||||||||||||
Designation | Saturn II | ||||||||||||
| Pronunciation | /ɛnˈsɛlədəs/[1] | ||||||||||||
Named after | Ἐγκέλαδος Enkélados | ||||||||||||
| Adjectives | Enceladean /ɛnsəˈleɪdiən/[2][3] | ||||||||||||
| Orbital characteristics | |||||||||||||
| 238037 km[4] | |||||||||||||
| Eccentricity | 0.0047[4] | ||||||||||||
| 1.370218 d[4] | |||||||||||||
| Inclination | 0.009° (to Saturn's equator)[4] | ||||||||||||
| Satellite of | Saturn | ||||||||||||
| Physical characteristics | |||||||||||||
| Dimensions | 513.2 × 502.8 × 496.6 km[4] | ||||||||||||
| 252.1±0.2 km[5] (0.0395 Earths, 0.1451 Moons) | |||||||||||||
| Mass | (1.080318±0.00028)×1020 kg[5] (1.8×10−5 Earths) | ||||||||||||
Mean density | 1.6097±0.0038 g/cm3[5] | ||||||||||||
| 0.113 m/s2 (0.0116 g) | |||||||||||||
| 0.3305±0.0025[6] | |||||||||||||
| Template:V2 km/s (860.4 km/h)[4] | |||||||||||||
| Synchronous | |||||||||||||
| < 0.05 deg[7] | |||||||||||||
| Albedo | 1.375±0.008 (geometric at 550 nm) or 0.81±0.04 (Bond) | ||||||||||||
| |||||||||||||
| 11.7 | |||||||||||||
| Atmosphere | |||||||||||||
Surface pressure | Trace, significant spatial variability[9][10] | ||||||||||||
| Composition by volume | 91% water vapor 4% nitrogen 3.2% carbon dioxide 1.7% methane[11] | ||||||||||||
Enceladus, sixth sab se barraa Saturn ke chaand hae aur Saur Mandal ke 18th sab se barraa hae. iske diameter lagbhag 500 kilometers (310 miles) hae,[4] aur ii Saturn ke sab se barraa chaand, Titan ke one-tenth hae. Ii snow se covered hae aur saur mandal me ke sab se reflective chij me se ek hae. Iske kaaran iske surface temperature, din me 12 baje khaali −198 °C (75.1 K; −324.4 °F) talak pahuche sake hae. Iske chhota size ke bawajuut Enceladus me dher surface features hae, puraana cratered regions se nawaa, deformed terrain.
Saur mandal (Solar System)
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|---|---|---|---|---|---|---|---|
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| Suraj • Heliosphere |
Grah (Planets) ☾ = Chaand ∅ = rings |
Budhgrah (Mercury) | Sukhgrah (Venus) | Dunia (Earth) ☾ | Mangalgrah (Mars) ☾ | ||
| Brahaspati (Jupiter) ☾ ∅ | Sanigrah (Saturn) ☾ ∅ | Arungrah (Uranus) ☾ ∅ | Varungrah (Neptune) ☾ ∅ | ||||
| Bauna grah (Dwarf planet) |
Ceres | Pluto ☾ | Haumea ☾ | Makemake | |||
| Eris ☾ | |||||||
| Small Solar System bodies |
Chhota tara (Asteroid) (minor planets) |
Groups and families: Vulcanoids · Near-Earth asteroids · Asteroid belt Jupiter Trojans · Centaurs · Neptune Trojans · Asteroid moons · Meteoroids · Pallas · Juno · Vesta · Hygiea · | |||||
| See also the list of asteroids. | |||||||
| Trans- Neptunians |
Kuiper belt – Plutinos: Orcus · Ixion – Cubewanos: Varuna · Quaoar · Huya | ||||||
| Scattered disc: Sedna | |||||||
| Jhaarru | Lists of periodic and non-periodic comets Damocloids · Hills baadal · Oort baadal | ||||||
| See also the list of solar system objects | |||||||
- ↑ "Enceladus". Lexico UK English Dictionary. Oxford University Press. Archived from the original on July 31, 2020.
- ↑ Freitas, R. A. (1983). "Terraforming Mars and Venus Using Machine Self-Replicating Systems (SRS)". Journal of the British Interplanetary Society 36: 139. http://www.rfreitas.com/Astro/TerraformSRS1983.htm.
- ↑ Postberg et al. "Plume and surface composition of Enceladus", p. 129–130, 148, 156; Lunine et al. "Future Exploration of Enceladus and Other Saturnian Moons", p. 454; in Schenk et al., eds. (2018) Enceladus and the Icy Moons of Saturn
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 "Enceladus: Facts & Figures". Solar System Exploration. NASA. August 12, 2013. Archived from the original on October 16, 2013. Retrieved April 26, 2014.
- ↑ 5.0 5.1 5.2 Jacobson, Robert. A. (November 1, 2022). "The Orbits of the Main Saturnian Satellites, the Saturnian System Gravity Field, and the Orientation of Saturn's Pole". The Astronomical Journal 164 (5): 199. doi:10.3847/1538-3881/ac90c9.
- ↑ McKinnon, W. B. (2015). "Effect of Enceladus's rapid synchronous spin on interpretation of Cassini gravity". Geophysical Research Letters 42 (7): 2137–2143. doi:10.1002/2015GL063384.
- ↑ Giese, B. (2014). "An upper limit on Enceladus’ obliquity". European Planetary Science Congress (EPSC). https://elib.dlr.de/89471/.
- ↑ Spencer, John R.; Pearl, J. C. (2006). "Cassini Encounters Enceladus: Background and the Discovery of a South Polar Hot Spot". Science 311 (5766): 1401–5. doi:10.1126/science.1121661. PMID 16527965.
- ↑ Dougherty, M. K.; Khurana, K. K. (2006). "Identification of a Dynamic Atmosphere at Enceladus with the Cassini Magnetometer". Science 311 (5766): 1406–9. doi:10.1126/science.1120985. PMID 16527966.
- ↑ Hansen, Candice J.; Esposito, L. (2006). "Enceladus' Water Vapor Plume". Science 311 (5766): 1422–5. doi:10.1126/science.1121254. PMID 16527971.
- ↑ Waite, Jack Hunter Jr.; Combi, M. R. (2006). "Cassini Ion and Neutral Mass Spectrometer: Enceladus Plume Composition and Structure". Science 311 (5766): 1419–22. doi:10.1126/science.1121290. PMID 16527970.