Reference image
Object guide
433 Eros is a near-Earth asteroid visited by the NEAR Shoemaker spacecraft; its surface shows boulders, regolith and a complex cratered history. 433 Eros is approximately 16.8 km across.
How to observe 433 Eros
433 Eros 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 0.001 Earth diameters, 0.001 g surface gravity, 1.76 Earth years per orbit. These values are rounded from the catalogue measurements shown on this page.
- Radius
- 8.4 km
- Diameter
- 16.8 km
- Mass
- 6,690,000,000,000,000 kg
- Mean density
- 2.695 g/cm³
- Surface gravity
- 0.0059 m/s² (0.001 g)
- Orbital period
- 643 days (1.76 years)
0.001 Earth diameters0.001 g surface gravity1.76 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