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Comparison Chart
Comparison: Despina vs. Neptune

This chart shows the differences between Despina and Neptune. To change the planets/moons being compared, change one or more of the form fields at the bottom and click Refresh.

Discovered By
S. Synnott, Voyager 2
Urbain Le Verrier, John Couch Adams, Johann Galle
Date of Discovery
1989
23 September 1846
Average Orbit Distance
52,526 km
4,498,396,441 km
Perihelion/Perigee (closest)
52,515 km
4,459,753,056 km
Aphelion/Apogee (farthest)
52,537 km
4,537,039,826 km
Equatorial Radius
75.0 km
24,622 km
Equatorial Circumference
471.2 km
154,704.6 km
Volume
1,767,146 km3
62,525,703,987,421 km3
Mass
2,098,135,806,336,070,000 kg
102,410,000,000,000,000,000,000,000 kg
Density
1.3 g/cm3
1.638 g/cm3
Surface Area
70,685.83 km2
7,618,272,763 km2
Equatorial Surface Gravity
0.025 m/s2
11.15 m/s2
Escape Velocity
220 km/h
84,816 km/h
Mean Orbit Velocity
41,048.6 km/h
19,566 km/h
Orbit Eccentricity
0.000
0.00859048
Orbit Inclination to Ecliptic
0.07 degree
1.77 degrees

 

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Last Updated: 7 Apr 2014