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Mercury ☿
Planet Mercury

Planet 1: Mercury



Mercury is the first of nine planets in our solar system and is the closest to the sun. Planet Mercury moves from the morning sky to the evening sky several times a year. It never deviates far from the Sun so can be hard to locate.

Mercury Facts
      1. Mass (kg)
      2. 3.303e+23
      1. Radius (km)
      2. 2,439.7
      1. Density (gm/cm3)
      2. 5.42
      1. Distance from sun (km)
      2. 57,910,000
      1. Rotational period (days)
      2. 58.6462
      1. Orbital period (days)
      2. 87.969
      1. Orbital velocity (km/sec)
      2. 47.88
      1. Eccentricity of orbit
      2. 0.2056
      1. Tilt of axis (°)
      2. 0.00
      1. Inclination of orbit (°)
      2. 7.004
      1. Surface gravity (m/sec2)
      2. 2.78
      1. Escape velocity (km/sec)
      2. 4.25
      1. Albedo
      2. 0.10
      1. Magnitude (Vo)
      2. -1.9
      1. Surface temperature
      2. 179°C to -173°C
      1. Atmosphere
      2. He=42%, Na=42%, O2=15%
      1. Moons
      2. 0


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