Saturn

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Taken from: Wikipedia

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Saturn

Saturn in natural color, photographed by Cassini, 2004
Designations
Pronunciation	i/ˈsætərn/[1]
Adjective	Saturnian, Cronian
Orbital characteristics[5][a]
Epoch J2000.0
Aphelion	1,513,325,783 km (10.11595804 AU)
Perihelion	1,353,572,956 km (9.04807635 AU)
Semi-major axis	1,433,449,370 km (9.5820172 AU)
Eccentricity	0.055723219
Orbital period	10 759.22 days 29.4571 yr 24 491.07 Saturn solar days[2]
Synodic period	378.09 days[3]
Average orbital speed	9.69 km/s[3]
Mean anomaly	320.346 750°
Inclination	2.485 240° to Ecliptic 5.51° to Sun's equator 0.93° to invariable plane[4]
Longitude of ascending node	113.642 811°
Argument of perihelion	336.013 862°
Satellites	62 with formal designations; innumerable additional moonlets.[3]
Physical characteristics
Equatorial radius	60 268 ± 4 km[6][b] 9.4492 Earths
Polar radius	54 364 ± 10 km[6][b] 8.5521 Earths
Flattening	0.097 96 ± 0.000 18
Surface area	4.27×1010 km²[b][7] 83.703 Earths
Volume	8.2713×1014 km3[3][b] 763.59 Earths
Mass	5.6846×1026 kg[3] 95.152 Earths
Mean density	0.687 g/cm3[3][b] (less than water)
Equatorial surface gravity	10.44 m/s²[3][b] 1.065 g
Escape velocity	35.5 km/s[3][b]
Sidereal rotation period	10.57 hours[8] (10 hr 34 min)
Equatorial rotation velocity	9.87 km/s[b] 35 500 km/h
Axial tilt	26.73°[3]
North pole right ascension	2h 42m 21s 40.589°[6]
North pole declination	83.537°[6]
Albedo	0.342 (Bond) 0.47 (geometric)[3]
Surface temp. min mean max 1 bar level 134 K[3] 0.1 bar 84 K[3]
Apparent magnitude	+1.47 to −0.24[9]
Angular diameter	14.5"–20.1"[3] (excludes rings)
Atmosphere[3]
Scale height	59.5 km
Composition	~96% hydrogen (H2) ~3% helium (He) ~0.4% methane (CH4) ~0.01% ammonia (NH3) ~0.01% hydrogen deuteride (HD) 0.0007% ethane (C2H6) Ices: ammonia (NH3) water (H2O) ammonium hydrosulfide (NH4SH)