Helio
895 Helio (A918 NA)
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 109.568 km
- Rotation period
- 9.347 hours
- Albedo
- 0.071
- Absolute magnitude H
- 8.28 mag
- Spectral type (Tholen)
- FCB
- Spectral type (SMASS)
- B
Orbit
- Orbit class (JPL)
- OMB — Outer Main-belt Asteroid
- Semi-major axis
- 3.2 AU
- Eccentricity
- 0.142
- Inclination
- 26.1°
- Perihelion distance
- 2.75 AU
- Aphelion distance
- 3.66 AU
- Orbital period
- 2,090 days
- Perihelion passage
- JD 2460377.930
- Earth MOID
- 1.76 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 110 km across — 27.4% of the 400 km Seoul–Busan expressway.
- One orbit takes about 2,090 Earth days (about 5.7 years).
- Sunlight needs about 27 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.