Simeisa
748 Simeisa (A913 EL)
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 103.714 km
- Rotation period
- 11.905 hours
- Albedo
- 0.041
- Absolute magnitude H
- 9.08 mag
- Spectral type (Tholen)
- P
Orbit
- Orbit class (JPL)
- OMB — Outer Main-belt Asteroid
- Semi-major axis
- 3.95 AU
- Eccentricity
- 0.19
- Inclination
- 2.26°
- Perihelion distance
- 3.2 AU
- Aphelion distance
- 4.7 AU
- Orbital period
- 2,870 days
- Perihelion passage
- JD 2462158.768
- Earth MOID
- 2.22 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 104 km across — 25.9% of the 400 km Seoul–Busan expressway.
- One orbit takes about 2,870 Earth days (about 7.9 years).
- Sunlight needs about 33 minutes to reach it on average (semi-major axis 4 AU) — versus about 8 min 19 s to Earth.
Worked out from this object's official values.