Asteroid
Near-Earth
Atira
163693 Atira (2003 CP20)
Where is it now
- Distance from Sun
- 0.882 AU
- True anomaly
- 140.2°
- As of
- 29 August 2026
Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.
Orbital elements
- Semi-major axis
- 0.741 AU
- Eccentricity
- 0.3222
- Inclination
- 25.62°
- Orbital period
- 233 days
- Perihelion
- 0.502 AU
- Aphelion
- 0.98 AU
- Longitude of ascending node
- 103.87°
- Argument of periapsis
- 252.93°
- Epoch · J2000
- 2461200.5
Physical properties
- Rotation period
- 3.4 hours
Visual & observation
- Absolute magnitude (H)
- 16.41
- Spectral type
- IEO
Discovery & classification
Near-Earth Object
Named