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Comparison Chart
Comparison: Themisto vs. Jupiter

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

Discovered By
First time: Charles Thomas Kowal and Elizabeth Roemer
Second time: Scott Sander Sheppard, David C. Jewitt, Yanga Roland Fernández and Eugene A. Magnier
Known by the Ancients
Date of Discovery
First time: 30 September 1975
Second time: 6 August 2000
Unknown
Average Orbit Distance
7,507,000 km
778,340,821 km
Perihelion/Perigee (closest)
5,687,303 km
740,679,835 km
Aphelion/Apogee (farthest)
9,326,697 km
816,001,807 km
Equatorial Radius
4.0 (assuming an albedo of 0.04) km
69,911 km
Equatorial Circumference
25.1 km
439,263.8 km
Volume
268 km3
1,431,281,810,739,360 km3
Mass
689,387,479,224,709 kg
1,898,130,000,000,000,000,000,000,000 kg
Density
2.6 g/cm3
1.326 g/cm3
Surface Area
201.06 km2
61,418,738,571 km2
Equatorial Surface Gravity
0.003 m/s2
24.79 m/s2
Escape Velocity
17 km/h
216,720 km/h
Mean Orbit Velocity
14,891.0 km/h
47,002 km/h
Orbit Eccentricity
0.2424
0.04838624
Orbit Inclination to Ecliptic
43.068
1.304 degrees
Orbit Circumference
46,467,175.95 km
4,887,595,931 km

 

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Last Updated: 17 Apr 2014