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Satellite data:
Name: Polyhymnia
Orbital period in years: 0.01
Orbital period in days: 3.06
Orbital period in hours: 73.38
Orbital radius (mean) km: 403.74E+6
Satellite diameter, km: 3979
Surface g, m/s/s: 1.26
Earth gravities: 0.13
Satellite mass, kg: 74.46E+21
Satellite mass, Earths: 0.01
Satellite volume, m^3: 32.99E+18
Satellite volume, Earths: 0.03
Density, g/cm^3: 2.26

Comments: Like Euterpe this moon shares many similar characteristics as Jupiter's Europa. However Polyhymnia is far more dominated by ice than rock, and consequently no great subsurface ocean exists, however a conductive slushy ice does surround the silicate core, which produces a faint but significant magnetic field, like Euterpe does.


Detailed orbital analysis
Eccentricity, tidal effects, angular velocity

Planetary eccentricity: 0.01
Satellite eccentricity: 0.00
Planetary aphelion m km: 510.78
Planetary perihelion m km: 505.70
Satellite apoapsis km: 404950.68
Satellite periapsis km: 402528.24
Satellite angular velocity: 0.00
Planet angular velocity: 0.00
Barycentre from middle of planet, km: 53.87
Tide height caused from moon, m: 9.37
Tide height caused from sun, m: 0.13
Tide height caused on moon from planet, m: 1784.69
Planetary axial tilt, degrees: 8.81
Satellite axial tilt, degrees: 9.41
Satellite orbital inclination, degrees: 3.15
Planetary orbital inclination, degrees: 6.88

Decorative lower bar