Mercury
| Orbital Elements | |
|---|---|
| Semimajor Axis: | 0.3870993 AU |
| Eccentricity: | 0.20564 |
| Inclination: | 7.005° |
| Argument of Perifocus: | 29.13° |
| Longitude of Ascending Node: | 48.3° |
| Mean Motion: | 4.0923388° per day |
| Time of Periapsis: | 2006 May 22, 10:33 UT |
| Orbital Period: | 87.969257 days |
| Mass: | 0.05527 ME |
| Equatorial Radius: | 0.3826 RE |
| Rotational Inclination: | 0.1° |
| Rotational Period: | 58.6462 days |
| Surface Temperature: | -170°C (nightside) to 430°C (dayside) |
| Atmosphere: | Trace |
