Earth Facts
| Mean distance from the Sun: | 1 AU (149,600,000 km/ 92,960,000 mi) |
| Length of year: | 365.26 days |
| Rotation period: | 23.93 hours |
| Mean orbital velocity: | 29.79 km/sec (18.6 mi/sec) |
| Inclination of axis: | 23.45° |
| Average temperature: | 59° F (15° C) |
| Diameter: (equatorial) | 12,756 km (7,926 mi) |
| Number of observed satellites: | 1 |
All information and images on this page were obtained from the National Air and Space Museum except the bottom image from
NASA.