This chart shows the differences between S/2003 J2 and Jupiter. To change the planets/moons being compared, change one or more of the form fields at the bottom and click Refresh.

	S/2003 J2	Jupiter
Discovered By	Scott S. Sheppard, David C. Jewitt, Jan T. Kleyna, Yanga R. Fernandez, and Henry H. Hsieh	Known by the Ancients
Date of Discovery	February-March 2003	Unknown
Average Orbit Distance	28,332,000 km	778,340,821 km
Perihelion/Perigee (closest)	16,676,215 km	740,679,835 km
Aphelion/Apogee (farthest)	39,987,785 km	816,001,807 km
Equatorial Radius	1.0 (assuming an albedo of 0.04) km	69,911 km
Equatorial Circumference	6.3 km	439,263.8 km
Volume	4 km3	1,431,281,810,739,360 km3
Mass	14,986,684,330,972 kg	1,898,130,000,000,000,000,000,000,000 kg
Density	2.6 g/cm3	1.326 g/cm3
Surface Area	12.57 km2	61,418,738,571 km2
Equatorial Surface Gravity	0.001 m/s2	24.79 m/s2
Escape Velocity	5 km/h	216,720 km/h
Orbit Period (Length of Year)	2.681259411 sidereal years	11.862615 sidereal years
Mean Orbit Velocity	7,242.4 km/h	47,002 km/h
Orbit Eccentricity	0.4114	0.04838624
Orbit Inclination to Ecliptic	157.106	1.304 degrees
Orbit Circumference	170,225,302.36 km	4,887,595,931 km