Doris
48 Doris (A857 SA)
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 216.473 km
- Rotation period
- 11.89 hours
- Albedo
- 0.065
- Absolute magnitude H
- 7.1 mag
- Spectral type (Tholen)
- CG
- Spectral type (SMASS)
- Ch
Orbit
- Orbit class (JPL)
- MBA — Main-belt Asteroid
- Semi-major axis
- 3.11 AU
- Eccentricity
- 0.0661
- Inclination
- 6.56°
- Perihelion distance
- 2.91 AU
- Aphelion distance
- 3.32 AU
- Orbital period
- 2,010 days
- Perihelion passage
- JD 2460210.865
- Earth MOID
- 1.93 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 216 km across — 54.1% of the 400 km Seoul–Busan expressway.
- One orbit takes about 2,010 Earth days (about 5.5 years).
- Sunlight needs about 26 minutes to reach it on average (semi-major axis 3.1 AU) — versus about 8 min 19 s to Earth.
Worked out from this object's official values.