Planet Mercury Data

Mercury as seen by the MESSENGER spacecraft on 2008 January 14 from a distance of about 27,000 kilometers

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

No Satellites

1 AU = 1.49597870691·1011 m            1 year = 365.25 days = 31557600 s
1 ME = 5.9742·1024 kg            1 RE = 6.378136·106 m

The URL of this page is: http://www.princeton.edu/~willman/planetary_systems/Sol/Mercury
This page was last updated: 2006 Apr 8
You may contact Alex at: willman@Princeton.EDU
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