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Designations | |||||||||||||
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Pronunciation | /ˈdʒuːpɪər/ ( listen)[page needed] | ||||||||||||
Named after | Jupiter | ||||||||||||
Adjectives | Jovian /ˈdʒoʊiən/ | ||||||||||||
Orbital characteristics | |||||||||||||
Epoch J2000 | |||||||||||||
Aphelion | Lua error in Module:Convert at line 272: attempt to index local 'cat' (a nil value). | ||||||||||||
Perihelion | Lua error in Module:Convert at line 272: attempt to index local 'cat' (a nil value). | ||||||||||||
Lua error in Module:Convert at line 272: attempt to index local 'cat' (a nil value). | |||||||||||||
Eccentricity | 0.0489 | ||||||||||||
| |||||||||||||
398.88 d | |||||||||||||
Average orbital speed | Lua error in Module:Convert at line 272: attempt to index local 'cat' (a nil value). | ||||||||||||
20.020° | |||||||||||||
Inclination |
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100.464° | |||||||||||||
21 January 2023 | |||||||||||||
273.867° | |||||||||||||
Known satellites | 95 (as of 2023[update]) | ||||||||||||
Physical characteristics[page needed] | |||||||||||||
Mean radius | Lua error in Module:Convert at line 272: attempt to index local 'cat' (a nil value). 10.973 Earths | ||||||||||||
Equatorial radius | |||||||||||||
Polar radius | |||||||||||||
Flattening | 0.06487 | ||||||||||||
| |||||||||||||
Volume | |||||||||||||
Mass | |||||||||||||
Mean density | Lua error in Module:Convert at line 272: attempt to index local 'cat' (a nil value). | ||||||||||||
Lua error in Module:Convert at line 272: attempt to index local 'cat' (a nil value). 2.528 g | |||||||||||||
0.2756±0.0006 | |||||||||||||
Lua error in Module:Convert at line 272: attempt to index local 'cat' (a nil value). | |||||||||||||
9.9258 h (9 h 55 m 33 s) | |||||||||||||
Sidereal rotation period | 9.925 hours (9 h 55 m 30 s) | ||||||||||||
Equatorial rotation velocity | Lua error in Module:Convert at line 272: attempt to index local 'cat' (a nil value). | ||||||||||||
3.13° (to orbit) | |||||||||||||
North pole right ascension | 268.057°; 17h 52m 14s | ||||||||||||
North pole declination | 64.495° | ||||||||||||
Albedo | 0.503 (Bond) 0.538 (geometric)[page needed] | ||||||||||||
| |||||||||||||
−2.94[page needed] to −1.66[page needed] | |||||||||||||
29.8" to 50.1" | |||||||||||||
Atmosphere | |||||||||||||
Surface pressure | 200–600 kPa (opaque cloud deck) | ||||||||||||
Lua error in Module:Convert at line 272: attempt to index local 'cat' (a nil value). | |||||||||||||
Composition by volume | |||||||||||||
Jupiter is the largest planet in the Solar System. It is the fifth planet from the Sun. Jupiter is a gas giant because it is so large, and made mostly of gas. The other gas giants in the Solar System are Saturn, Uranus, and Neptune.
Jupiter was discovered by Galileo Galilei in 1610 with a small telescope. The planet has a Great Red Spot which is located at 22 degrees south of Jupiter's equator, it produces wind-speeds up to 432 km/h (268 mph).