Asteroid
Near-Earth
Ubasti
4257 Ubasti (1987 QA)
Where is it now
- Distance from Sun
- 2.209 AU
- True anomaly
- 153.21°
- 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
- 1.647 AU
- Eccentricity
- 0.4683
- Inclination
- 40.72°
- Orbital period
- 772 days
- Perihelion
- 0.876 AU
- Aphelion
- 2.418 AU
- Longitude of ascending node
- 169.14°
- Argument of periapsis
- 278.95°
- Epoch · J2000
- 2461200.5
Physical properties
- Rotation period
- 4.4 hours
Visual & observation
- Absolute magnitude (H)
- 15.97
- Spectral type
- APO
Discovery & classification
Near-Earth Object
Named