सिँनगु

वृहस्पति
	A composite Cassini image of Jupiter. The dark spot is the shadow of Europa. The Great Red Spot, a persistent anticyclonic storm, is at lower right. White atmospheric bands, termed zones, represent areas of upwelling; reddish bands, called belts, represent areas of downwelling. They display high-altitude ammonia ice clouds and lower clouds of unknown composition, respectively.
Designations
Pronunciation	/ˈdʒuːpɨtər/
Adjective	Jovian
Orbital characteristics
	Epoch J2000
Aphelion	816,520,800 km (5.458104 AU)
Perihelion	740,573,600 km (4.950429 AU)
Semi-major axis	778,547,200 km (5.204267 AU)
Eccentricity	0.048775
Orbital period	4,332.59 days; 11.8618 yr; 10,475.8 Jupiter solar days;
Synodic period	398.88 days
Average orbital speed	13.07 km/s
Mean anomaly	18.818°
Inclination	1.305° to Ecliptic; 6.09° to Sun's equator; 0.32° to Invariable plane;
Longitude of ascending node	100.492°
Argument of perihelion	275.066°
Satellites	67
Physical characteristics
Mean radius	69,911 ± 6 km
Equatorial radius	71,492 ± 4 km; 11.209 Earths;
Polar radius	66,854 ± 10 km; 10.517 Earths;
Flattening	0.06487 ± 0.00015
Surface area	6.1419×1010 km2; 121.9 Earths;
Volume	1.4313×1015 km3; 1321.3 Earths;
Mass	1.8986×1027 kg; 317.8 Earths; 1/1047 Sun;
Mean density	1.326 g/cm3
Equatorial surface gravity	24.79 m/s2 ; 2.528 g
Escape velocity	59.5 km/s
Sidereal rotation period	9.925 h (9 h 55 m 30 s)
Equatorial rotation velocity	12.6 km/s ; 45,300 km/h
Axial tilt	3.13°
North pole right ascension	268.057° ; 17 h 52 min 14 s
North pole declination	64.496°
Albedo	0.343 (Bond) ; 0.52 (geom.)
Apparent magnitude	-1.6 to -2.94
Angular diameter	29.8" — 50.1"
Atmosphere
Surface pressure	20–200 kPa (cloud layer)
Scale height	27 km
89.8±2.0%	hydrogen (H2)
10.2±2.0%	helium
~0.3%	methane
~0.026%	ammonia
~0.003%	hydrogen deuteride (HD)
0.0006%	ethane
0.0004%	water
Ices:
	ammonia
	water
	ammonium hydrosulfide(NH4SH)

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