Bertha
154 Bertha (A875 VD)
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 192.611 km
- Rotation period
- 25.224 hours
- Albedo
- 0.044
- Absolute magnitude H
- 7.65 mag
- Spectral type (SMASS)
- C
Orbit
- Orbit class (JPL)
- MBA — Main-belt Asteroid
- Semi-major axis
- 3.19 AU
- Eccentricity
- 0.0772
- Inclination
- 21°
- Perihelion distance
- 2.95 AU
- Aphelion distance
- 3.44 AU
- Orbital period
- 2,080 days
- Perihelion passage
- JD 2461101.377
- Earth MOID
- 1.94 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 193 km across — 48.2% of the 400 km Seoul–Busan expressway.
- One orbit takes about 2,080 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.