Mercure  

Mercure

Mercure
Orbital Characteristics of Mercury

Caractéristiques orbitales

Périhélie: 46,001,200 km, 0.307499 AE
Aphélie: 69,816,900 km, 0.466697 AE
Demi-grand axe: 57,909,100 km, 0.387098 AE
Excentricité: 0.205630
Période de révolution: 87.9691 jours, 0.240846 années
Période synodique: 115.88 jours
Vitesse orbitale moyenne: 47.87 km/s
Anomalie moyenne: 174.796°
Inclinaison: 7.005°
Longitude du nœud ascendant: 48.331°
Argument du périhélie: 29.124°

Satellites/Lunes: 0




Physical Characteristics of Mercury

Caractéristiques physiques

Rayon équatorial: 2,439.7 km (0.3829 x Terre)
Aplatissement: < 0.0006
Superficie: 7.48×1070.108 km2 ( x Terre)
Volume: 6.083×1010 km3 (0.054 x Terre)
Masse: 3.3022×1023 kg (0.055 x Terre)
Masse volumique moyenne: 5.427 g/cm3
Gravité à la surface: 3.7 m/s2
Vitesse de libération: 4.25 km/s
Sidereal rotation period: 58.646 Earth days, 1407.5 Earth hours
Inclinaison de l’axe: 2.11′ ± 0.1′
Albédo moyen: 0.106
Température de surface: 100/700 K, -173/427 °C, -279/801 °F
Magnitude apparente: -1.9
Diamètre angulaire: 4.5" – 13"


The Atmosphere of Mercury

Atmosphère

Composition:
  • 42% Oxygen (O2)
  • 29.0% Sodium
  • 22.0% Hydrogen (H2)
  • 6.0% Helium
  • 0.5% Potassium
  • Trace amounts of Argon, Nitrogen (N2), Carbon Dioxide (CO2), water vapor (H2O), Xenon, Krypton, Neon



    Mercury images:


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