Sun and inner planets
This page contains data for the Sun and Inner planets.
For the whole solar system see:
Planetary data For the outer planets see:
Outer
planets
For general astronomical data see:
Astronomical data
Sun
| Mean radius |
|
1.99x108m |
| Mass |
|
1.9x1027 kg |
| Core temperature |
|
1.5x106 K |
| Surface temperature |
|
6000 K |
| Surface gravity |
|
274 ms-2 |
| Day length |
|
24.5 days (equatorial) |
Mercury
| Mean radius |
|
2.44x106m |
| Mass |
|
3.58x1023 kg |
| Distance from Sun |
|
1.43x1012m = 79 light mins = 9.5 AU |
| Surface gravity |
|
10.4 ms-2 |
| Day length |
|
10.23 hours |
| Year length |
|
29.5 Earth years |
Venus
| Mean radius |
|
6.052x106m |
| Mass |
|
4.90x1024 kg |
| Distance from Sun |
|
1.08x1011m = 6 light mins = 0.72 AU |
| Surface gravity |
|
8.84 ms-2 |
| Day length |
|
243 days (R) |
| Year length |
|
225 days |
Earth
| Mean radius |
|
6.38x106m |
| Mass |
|
5.98x1024 kg |
| Distance from Sun |
|
1.496x1011m = 8.3 light mins = 1.0 AU |
| Surface gravity |
|
9.81 ms-2 |
| Day length |
|
23.9 hours |
| Year length |
|
365.26 days |
Moon (Earth's)
| Mean radius |
|
1.74x106m |
| Mass |
|
7.35x1022 kg |
| Distance from Earth |
|
3.8x108m = 1.25 light seconds |
| Surface gravity |
|
1.62 ms-2 |
| Day length |
|
27.32 Earth days (R) |
| Orbital period |
|
27.32 Earth days |
Mars
| Mean radius |
|
3.39x106m |
| Mass |
|
6.4x1023 kg |
| Distance from Sun |
|
2.3x1011m = 12 light mins = 1.52 AU |
| Surface gravity |
|
3.80 ms-2 |
| Day length |
|
24.6 hours (R) |
| Year length |
|
687 days |
