Jupiter’s Moon Metis
Jupiter’s moon Metis — Metis [MEE-tis] is the innermost known satellite of Jupiter. It was named after a Titaness who was a consort of Zeus (Jupiter).
Metis and Adrastea lie within Jupiter’s main ring and may be the source of material for the ring. Very little is known about Metis.
40 kilometers (25 miles) in diameter, orbiting 128,000 kilometers (79,500 miles) from Jupiter.
Discovered by Stephen Synnott
Date of discovery 1979
Mass (kg) 9.56e+16
Mass (Earth = 1) 1.5997e-08
Equatorial radius (km) 20
Equatorial radius (Earth = 1) 3.1358e-03
Mean density (gm/cm^3) 2.8
Mean distance from Jupiter (km) 127,969
Rotational period (days) ?
Orbital period (days) 0.294779
Mean orbital velocity (km/sec) 31.57
Orbital eccentricity 0.0000
Orbital inclination (degrees) 0.0000
Escape velocity (km/sec) 0.0253
Visual geometric albedo 0.05
Magnitude (Vo) 17.5