Themisto (moon)

Tags: Planet.

Themisto (/θɨˈmɪstoʊ/; from Greek: Θεμιστώ) also known as Jupiter XVIII is a small prograde irregular satellite of Jupiter. It was discovered in 1975 lost and then rediscovered in 2000.

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apoapsis (km)

8.8743e+09

average speed (km/s)

14752.8

density (μ3)

2600.0

mass (kg)

6890.0

mean radius (km)

4000.0

orbital period (μ)

1.12171e+07

periapsis (km)

5.909e+09

surface area (km2)

2e+08

temperature (K)

124.0

volume (km3)

2.7e+11

albedo

0.04

discovery date

1975-09-30, 2000-11-21

discoverer

Scott S. Sheppard, Elizabeth Roemer, David C. Jewitt, Charles T. Kowal, Yanga R. Fernández, Eugene_A._Magnier

escape velocity (kmh)

17.28