Emma
283 Emma (A889 CA)
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 132.385 km
- Rotation period
- 6.896 hours
- Albedo
- 0.023
- Absolute magnitude H
- 8.77 mag
- Spectral type (Tholen)
- X
Orbit
- Orbit class (JPL)
- MBA — Main-belt Asteroid
- Semi-major axis
- 3.05 AU
- Eccentricity
- 0.144
- Inclination
- 7.99°
- Perihelion distance
- 2.61 AU
- Aphelion distance
- 3.49 AU
- Orbital period
- 1,940 days
- Perihelion passage
- JD 2460815.926
- Earth MOID
- 1.62 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 132 km across — 33.1% of the 400 km Seoul–Busan expressway.
- One orbit takes about 1,940 Earth days (about 5.3 years).
- Sunlight needs about 25 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.