Asteroid
The third-largest object in the asteroid belt, tilted at a steep angle unlike most other large asteroids.
| Type | Asteroid |
|---|---|
| Distance from the Sun | 2.77 AU |
| Diameter | 513 km |
| Mass | 2.11 × 10²⁰ kg |
| Temperature | -109°C |
| Orbital period | 1,686 days |
| Rotation period | 7.813 hours |
| Apparent magnitude | 8 |
| Redshift | 0 |
| Discovered | 1802 |
Asteroids are rocky leftovers from the solar system's formation, most of them confined to the belt between Mars and Jupiter where Jupiter's gravity kept them from ever assembling into a planet.
At 513 km across, 2 Pallas is 4.0 percent of the diameter of Earth.
Its mass is less than a thousandth of the mass of Earth.
It keeps an average distance of 2.77 AU from the Sun, so sunlight takes 23 minutes to reach it.
A single orbit takes 4.6 years.
An average temperature of 164 K works out at -109 degrees Celsius, colder than the 15 degrees Earth averages.
It has been on record since 1802.
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