Elpis
59 Elpis (A860 RA)
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 165.119 km
- Rotation period
- 13.671 hours
- Albedo
- 0.044
- Absolute magnitude H
- 8.08 mag
- Spectral type (Tholen)
- CP
- Spectral type (SMASS)
- B
Orbit
- Orbit class (JPL)
- MBA — Main-belt Asteroid
- Semi-major axis
- 2.71 AU
- Eccentricity
- 0.116
- Inclination
- 8.65°
- Perihelion distance
- 2.4 AU
- Aphelion distance
- 3.03 AU
- Orbital period
- 1,630 days
- Perihelion passage
- JD 2461144.423
- Earth MOID
- 1.4 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 165 km across — 41.3% of the 400 km Seoul–Busan expressway.
- One orbit takes about 1,630 Earth days (about 4.5 years).
- Sunlight needs about 23 minutes to reach it on average (semi-major axis 2.7 AU) — versus about 8 min 19 s to Earth.
Worked out from this object's official values.