Mercury

Mercury — planet, explore its interactive 3D model in Cosmoscope.

Explore Mercury in a live 3D Solar System. Follow its calculated motion and inspect real astronomical data, distances and orbital facts.

The smallest planet and the fastest, skimming the Sun at 47 km/s. With almost no atmosphere to hold heat, its days scorch and its nights freeze — the widest temperature swing in the solar system.

Radius

2,440 km

Mass

3.30 × 10²³ kg

Gravity

3.7 m/s²

Day (sidereal)

58.6 Earth days

Year

88.0 Earth days

Temperature

−173 to 427 °C

Moons

0

Semi-major axis

0.39 AU

Explore Mercury in 3D

Cosmoscope places Mercury in the Solar System using astronomical ephemeris or orbital elements, updated for the simulation time. Explore its calculated motion, distance and orbital facts in the interactive 3D view. Accuracy depends on the orbital model and its valid time range.