Galatea
Neptune VI - 1989N4
Galatea [gal-eh-TEE-eh] lies 37,200 kilometers (23,100 miles) from Neptune. It has a diameter of 180 kilometers (110 miles) and completes an orbit in 10 hours, 18 minutes. It is irregularly shaped and shows no sign of any geological modification. Galatea circles the planet in the same direction as Neptune rotates, and remains close to Neptune's equatorial plane. The above image is smeared so that Galatea appears highly elongated.
| Galatea Statistics | |
|---|---|
| Discovered by | Voyager 2 |
| Date of discovery | 1989 |
| Mass (kg) | ? |
| Equatorial radius (km) | 79 |
| Equatorial radius (Earth = 1) | 1.2386e-02 |
| Mean density (gm/cm^3) | ? |
| Mean distance from Neptune (km) | 62,000 |
| Rotational period (days) | ? |
| Orbital period (days) | 0.428745 |
| Mean orbital velocity (km/sec) | 10.52 |
| Orbital eccentricity | 0.0001 |
| Orbital inclination (degrees) | 0.05 |
| Visual geometric albedo | 0.06 |
| Magnitude (Vo) | 22.3 |
Neptune
Despina
Larissa