Neptune I
| Triton Statistics | |
|---|---|
| Discovered by | William Lassell |
| Date of discovery | 1846 |
| Mass (kg) | 2.14e+22 |
| Mass (Earth = 1) | 3.5810e-03 |
| Equatorial radius (km) | 1,350 |
| Equatorial radius (Earth = 1) | 2.1167e-01 |
| Mean density (gm/cm^3) | 2.07 |
| Mean distance from Neptune (km) | 354,800 |
| Rotational period (days) | -5.87685 |
| Orbital period (days) | -5.87685 |
| Mean orbital velocity (km/sec) | -4.39 |
| Orbital eccentricity | 0.0000 |
| Orbital inclination (degrees) | 157.35 |
| Escape velocity (km/sec) | 1.45 |
| Visual geometric albedo | 0.7 |
| Magnitude (Vo) | 13.47 |
| Mean surface temperature | -235°C |