Reference image
Object guide
Pallas is a large, inclined asteroid in the main belt and was the second asteroid discovered. It has a heavily cratered, primitive surface. Pallas is approximately 512 km across.
How to observe Pallas
Pallas is generally a challenging visual target. Use a current ephemeris, dark skies, and image stacking when its angular size or brightness is insufficient for direct detail.
Scientific context
Useful scale comparisons are 0.04 Earth diameters, 0.022 g surface gravity, 4.616 Earth years per orbit. These values are rounded from the catalogue measurements shown on this page.
- Radius
- 256 km
- Diameter
- 512 km
- Mass
- 204,000,000,000,000,000,000 kg
- Mean density
- 2.903 g/cm³
- Surface gravity
- 0.22 m/s² (0.022 g)
- Orbital period
- 1,686 days (4.616 years)
0.04 Earth diameters0.022 g surface gravity4.616 Earth years per orbit
Source: NASA/JPL Small-Body Database (checked 2026-08-09). Values are rounded catalogue measurements.
Interactive orbit model
Aug 13, 2026, 22:251×
Calculated positions / separate exploration scales