Ersa
Moon· orbits Jupiter
Ersa is a moon orbiting Jupiter.
Open in 3D viewSee Ersa in the live, interactive 3D map
Key facts
Radius
1.5 km
Orbit around Jupiter
248 Earth days
Science
Physical
- Radius (estimated)
- 1.5 km
- Sized from its brightness assuming a dark (~0.04) surface — never resolved, so the true diameter (~3 km) could be off by a factor of two.
Orbit around Jupiter
- Distance from Jupiter
- 11,380,728 km
- From JPL orbital elements
- Orbital period
- 248.1 days
- From JPL orbital elements
- Eccentricity
- 0.1081
- From JPL orbital elements
- Inclination to the J2000 equator
- 39.37 °
- From JPL orbital elements
Radiation & temperature
- Insolation
- 0.0354 S⊕ · 4% of the sunlight Earth receives
- Computed from the distance to the Sun (inverse-square; Earth's sunlight = 1), before any atmosphere.
Discovery & history
- By
- S.S. Sheppard
Ersa was discovered in 2018 by S.S. Sheppard. Jupiter's moons are named after lovers, daughters and descendants of the god Jupiter (the Greek Zeus). Beyond its discovery and naming, little more about it has been individually recorded.
Images
No resolved image of this moon has been released: telescopes and passing spacecraft have recorded it only as a faint point of light.