Despina
Neptune V - 1989N3
Despina, only 27,700 kilometers (17,200 miles) from Neptune's clouds, orbits every 8 hours. Its diameter is about 150 kilometers (90 miles). It is irregularly shaped and shows no sign of any geological modification. Despina circles the planet in the same direction as Neptune rotates, and remains close to Neptune's equatorial plane.
| Despina Statistics | |
|---|---|
| Discovered by | Voyager 2 |
| Date of discovery | 1989 |
| Mass (kg) | ? |
| Equatorial radius (km) | 74 |
| Equatorial radius (Earth = 1) | 1.1602e-02 |
| Mean density (gm/cm^3) | ? |
| Mean distance from Neptune (km) | 52,500 |
| Rotational period (days) | ? |
| Orbital period (days) | 0.334655 |
| Mean orbital velocity (km/sec) | 11.41 |
| Orbital eccentricity | 0.0001 |
| Orbital inclination (degrees) | 0.07 |
| Visual geometric albedo | 0.06 |
| Magnitude (Vo) | 22.6 |
Neptune
Thalassa
Galatea