Donaldjohanson
52246 Donaldjohanson (1981 EQ5)
🚀 Visited by spacecraft
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 3.895 km
- Albedo
- 0.103
- Absolute magnitude H
- 15.61 mag
Orbit
- Orbit class (JPL)
- MBA — Main-belt Asteroid
- Semi-major axis
- 2.38 AU
- Eccentricity
- 0.187
- Inclination
- 4.43°
- Perihelion distance
- 1.94 AU
- Aphelion distance
- 2.83 AU
- Orbital period
- 1,340 days
- Perihelion passage
- JD 2460648.373
- Earth MOID
- 0.956 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 4 km across — 1% of the 400 km Seoul–Busan expressway.
- One orbit takes about 1,340 Earth days (about 3.7 years).
- Sunlight needs about 20 minutes to reach it on average (semi-major axis 2.4 AU) — versus about 8 min 19 s to Earth.