Hilda
153 Hilda (A875 VC)
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 170.63 km
- Rotation period
- 5.9585 hours
- Albedo
- 0.0618
- Absolute magnitude H
- 7.73 mag
- Spectral type (Tholen)
- P
- Spectral type (SMASS)
- X
Orbit
- Orbit class (JPL)
- OMB — Outer Main-belt Asteroid
- Semi-major axis
- 3.97 AU
- Eccentricity
- 0.138
- Inclination
- 7.83°
- Perihelion distance
- 3.42 AU
- Aphelion distance
- 4.52 AU
- Orbital period
- 2,890 days
- Perihelion passage
- JD 2460087.651
- Earth MOID
- 2.41 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 171 km across — 42.7% of the 400 km Seoul–Busan expressway.
- One orbit takes about 2,890 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.