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Comparison Chart
Comparison: Triton vs. Neptune

This chart shows the differences between Triton 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
W. Lassell
Urbain Le Verrier, John Couch Adams, Johann Galle
Date of Discovery
23 September 1846
Average Orbit Distance
354,759 km
4,498,396,441 km
Perihelion/Perigee (closest)
354,759 km
4,459,753,056 km
Aphelion/Apogee (farthest)
354,759 km
4,537,039,826 km
Equatorial Radius
1353.4 km
24,622 km
Equatorial Circumference
8,503.7 km
154,704.6 km
10,384,058,491 km3
62,525,703,987,421 km3
21,394,990,550,895,500,000,000 kg
102,410,000,000,000,000,000,000,000 kg
2.059 g/cm3
1.638 g/cm3
Surface Area
23,017,714.99 km2
7,618,272,763 km2
Equatorial Surface Gravity
0.779 m/s2
11.15 m/s2
Escape Velocity
5,229 km/h
84,816 km/h
Orbit Period (Length of Year)
0.016090349 Earth years
164.79132 sidereal years
Mean Orbit Velocity
15,803.2 km/h
19,566 km/h
Orbit Eccentricity
Orbit Inclination to Ecliptic
156.865 degrees
1.77 degrees
Orbit Circumference
2,229,016.54 km
28,263,736,967 km


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System of measurement:

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Last Updated: 28 Apr 2014