Moon of Neptune
Larissa
A moon of Neptune.
At Neptune.
Measured
- Mean radius
- 96 km
- Goes round once every
- 13.3 hours
- Distance from Neptune
- about 73,600 km (its orbit's average)
- Orbit
- inclined 0.2°, eccentricity 0.001
- JPL / NAIF id
- 807
How far, from the Earth
About 29.3 AU. To cross it:
- Light4 hours 3 minutes
- Voyager 1's speed8.22 years
- Driving at 100 km/h4,990 years
Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.
Where this comes from
- Moons: JPL Planetary Satellite Mean Elements and Physical Parameters, paced to JPL Horizons. NASA/JPL-Caltech. Sizes JPL leaves out are estimates, mostly from brightness: Scott Sheppard's moon pages at Carnegie.
Every catalogue Ouranos draws is credited on the credits page.