Dione
Wispy ice cliffs hundreds of metres tall, and evidence of an ocean underneath.
Where it is right now
Dione is in Pisces, 8.97 AU away.
Computed for 2 August 2026, 17:00 UTC, and recomputed at least hourly. This page is cached, so treat the line above as accurate to the hour rather than to the second. The map shows the live position.
Position from a Kepler propagation of the published elements below, accurate to about an arcminute.
Facts
Every line carries the source it came from.
- Mean radius
- 561.4 kmSource: NASA/JPL Planetary Satellite Physical Parameters
- Orbits
- Saturn, 377,700 km out on averageSource: NASA/JPL Planetary Satellite Mean Elements
- Orbital period
- 2.74 daysSource: NASA/JPL Planetary Satellite Mean Elements
- Orbit shape
- eccentricity 0.0020, inclined 0.00 degrees to Saturn's Laplace planeSource: NASA/JPL Planetary Satellite Mean Elements
- Discovered
- 1684 by G.D. CassiniSource: NASA/JPL Planetary Satellite Discovery Circumstances
Physical size
- Mean radius
- 561 km
- Diameter
- 1,123 km across
Orbit
Elements are relative to Saturn.
- Average distance from Saturn
- 377,700 km
- Eccentricity
- 0.0020, almost perfectly circular
- Inclination to Saturn's reference plane
- 28.08 degrees
- Orbital period
- 2.7 days
- Longitude of ascending node
- 169.48 degrees
- Argument of periapsis
- 76.09 degrees
- Mean anomaly at J2000.0
- 212.00 degrees
Family
Orbits Saturn.
Claim this body
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Io, Europa, Titan, Triton and the rest. Sixteen exist, ever.
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Catalog id dione. 3,172 objects on the map, of which 171 are hand-authored with sourced facts.