Messalina
545 Messalina (A904 TC)
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 112.631 km
- Rotation period
- 7.2 hours
- Albedo
- 0.041
- Absolute magnitude H
- 8.79 mag
- Spectral type (Tholen)
- CD
- Spectral type (SMASS)
- Cb
Orbit
- Orbit class (JPL)
- OMB — Outer Main-belt Asteroid
- Semi-major axis
- 3.2 AU
- Eccentricity
- 0.175
- Inclination
- 11.3°
- Perihelion distance
- 2.64 AU
- Aphelion distance
- 3.76 AU
- Orbital period
- 2,090 days
- Perihelion passage
- JD 2462120.363
- Earth MOID
- 1.63 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 113 km across — 28.2% 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.