Map of the Universe
Mercury
Planet · First planet from the Sun
About Mercury
On 2026-01-01, the date the map shows, Mercury was 0.463 AU from the Sun; sunlight takes 3.85 minutes to reach it.
It goes round the Sun once every 87.97 days, at an average distance of 0.387 AU.
It is about 4,879 km across.
The map lists it as a planet and shows it in the Solar System part of the map, drawn on the plane of Earth’s orbit (the ecliptic).
Key numbers
| Semi-major axis | 0.387 AU |
|---|---|
| Orbital period | 87.97 days |
| Eccentricity | 0.2056 |
| Inclination | 7.00° |
| Mass | 3.3 × 10²³ kg |
| Radius | 2,439.7 km |
| Day length | 4,222.6 h (solar day) |
| Mean temperature | 167 °C |
| Distance from the Sun | 0.463 AU |
Where it is
Its place in the universe, from the inside out: Solar System › Orion–Cygnus Arm (Local Arm) › Milky Way › Local Group › Virgo Supercluster › Laniakea Supercluster › Observable universe.
Zoom out to see it in context: Inner planets, a view about 4 AU across.
From Wikipedia
Mercury is the first planet from the Sun and the smallest in the Solar System. It is a rocky planet with a trace atmosphere and a surface gravity slightly lower than that of Mars.
Excerpt from the Wikipedia article Mercury (planet), licensed CC BY-SA 4.0.