Astronomical specifications:
| Discovery | 1989 by Voyager 2 |
| Orbital characteristics: | |
| Distance from Sun | km |
| Aphelion | (106 km) |
| Perihelion | (106 km) |
| Inclination | deg |
| Eccentricity | |
| Orbital periode rond Sun | days |
| Main orbital speed | km/s |
| Inclination to Sun equator | deg |
| Number of moons | |
| Rings | |
| Physical characteristics: | |
| Dimensions | km |
| Radius | km |
| Surface area | km² |
| Volume | 106 km³ |
| Mass | 1024 kg |
| Density | g/cm³ |
| Equatorial surface gravity | m/s² |
| Escape velocity | km/s |
| Rotation period | days |
| Surface temperature | K |
| Axial tilt | deg |
| Atmospheric composition | |
Voyager 2 photo, 1989 August 25