(163693) Atira Atira
Discovered on 11 February 2003 by LINEAR at Socorro.
Atira is the Pawnee goddess of Earth and the evening star. This is the first numbered minor planet to have an orbit completely interior to that of the earth.Naming citation (20080122/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Atira is today
Seen from above the solar system on 2026-10-14: Atira is 0.979 au from the Sun and 1.89 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 163693 |
| Provisional designation | 2003 CP20 |
| Orbit class | Atira · near-Earth |
| Rotation period | 3.40 hours |
| Absolute magnitude (H) | 16.41 |
| Orbital period | 0.638 years |
| Semi-major axis | 0.741 au |
| Perihelion – aphelion | 0.502 – 0.980 au |
| Eccentricity | 0.322 |
| Inclination | 25.6° |
| Closest distance between its orbit and Earth's (MOID) | 0.207 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.