Mercury (planet)

Question

Mercury 

Mercury in color, by MESSENGER (2008)
Designations
Pronunciation	i/ˈmɜːrkjəri/
Adjectives	Mercurian, mercurial
Orbital characteristics
Epoch J2000
Aphelion	0.466 697 AU 69,816,900 km
Perihelion	0.307 499 AU 46,001,200 km
Semi-major axis	0.387 098 AU 57,909,050 km
Eccentricity	0.205 630
Orbital period	87.969 1 d 0.240 846 yr 0.5 Mercury solar day