Mercury

Informations détaillées

À propos Mercury

Mercury is a world of extremes. It's the smallest planet in our solar system and the closest to the Sun, experiencing temperature swings from 800°F (430°C) during the day to -290°F (-180°C) at night. Despite being the nearest planet to our star, Mercury is not the hottest planet – that title belongs to Venus. Mercury has the most eccentric orbit of all planets, and it completes three rotations for every two orbits around the Sun.

Faits rapides

  • Closest planet to the Sun
  • Smallest planet in our solar system
  • No atmosphere to retain heat
  • One day lasts 176 Earth days
Mercury - the smallest planet in our solar system
Page des faits NASA

Informations sur la planète

Lieu: Beijing

Mis à jour: 2026-04-30 18:58:26+08:00
Group Propriété Valeur
Current Position Right Ascension 01h34m04s
Current Position Declination +07°41'08"
Current Position Constellation Pisces
Current Position Azimuth 292.9572661102591°
Current Position Altitude -13.92564443362684°
Current Position Elongation 15.278702693059543°
Distance Information Earth Distance 1.2442998126760587 AU
Distance Information Sun Distance 0.3804930405761957 AU
Distance Information Earth Distance (km) 186144602.48874724 km
Visual Information Magnitude -0.747336489942483
Visual Information Angular Diameter 5.406815064665721"
Visual Information Phase Angle 44.231155406826616°
Visual Information Illumination 85.82657040485861%
Orbital Elements Semi-major Axis 0.38709927 AU
Orbital Elements Eccentricity 0.20563593
Orbital Elements Inclination 7.00497902°
Orbital Elements Ascending Node 48.33076593°
Orbital Elements Argument of Perihelion 77.45779628°
Orbital Elements Mean Anomaly 4.250059771031374°
Orbital Elements Epoch J2000.0
Orbital Elements Orbital Period 87.9691 days
Derived Quantities Mass 3.3011e+23 kg
Derived Quantities Radius 2439.7 km
Derived Quantities Density 5.427 g/cm³
Derived Quantities Surface Gravity 3.7 m/s²
Derived Quantities Escape Velocity 4.25 km/s
Derived Quantities Perihelion 0.3074977516112289 AU
Derived Quantities Aphelion 0.46670078838877105 AU
Derived Quantities Orbital Velocity 47.87223915523033 km/s
Derived Quantities Rotation Period 1407.6 hours
Derived Quantities Axial Tilt 0.034°
Rise, Set, Transit Times Rise Time N/A
Rise, Set, Transit Times Transit Time N/A
Rise, Set, Transit Times Set Time N/A
Rise, Set, Transit Times Visible Duration 0.0 hours
Rise, Set, Transit Times Best Observation N/A
Rise, Set, Transit Times Quality Rating Unknown

Graphique de trajectoire annuelle

Graphique d'altitude quotidien

Chargement du graphique d'altitude...