Iduna
176 Iduna (A877 TB)
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 106.976 km
- Rotation period
- 11.2877 hours
- Albedo
- 0.065
- Absolute magnitude H
- 8.41 mag
- Spectral type (Tholen)
- G
- Spectral type (SMASS)
- Ch
Orbit
- Orbit class (JPL)
- MBA — Main-belt Asteroid
- Semi-major axis
- 3.18 AU
- Eccentricity
- 0.173
- Inclination
- 22.7°
- Perihelion distance
- 2.63 AU
- Aphelion distance
- 3.73 AU
- Orbital period
- 2,070 days
- Perihelion passage
- JD 2460800.652
- Earth MOID
- 1.64 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 107 km across — 26.7% of the 400 km Seoul–Busan expressway.
- One orbit takes about 2,070 Earth days (about 5.7 years).
- Sunlight needs about 26 minutes to reach it on average (semi-major axis 3.2 AU) — versus about 8 min 19 s to Earth.
Worked out from this object's official values.