(311231) Anuradhapura Main-belt Asteroid
Discovered on 16 January 2005 by Spacewatch at Kitt Peak.
Anuradhapura is a UNESCO World Heritage site, situated in north-central Sri Lanka and was the capital city of the island for over a millennium. Name suggested and citation provided by Nalin Samarasinha.Naming citation (MPC batch dated 2014-01-16), IAU / Minor Planet Center, via NASA/JPL
Where Anuradhapura is today
Seen from above the solar system on 2026-10-14: Anuradhapura is 2.26 au from the Sun and 3.16 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 311231 |
| Provisional designation | 2005 BC23 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 17.46 |
| Orbital period | 3.56 years |
| Semi-major axis | 2.33 au |
| Perihelion – aphelion | 2.11 – 2.56 au |
| Eccentricity | 0.0964 |
| Inclination | 3.51° |
| Closest distance between its orbit and Earth's (MOID) | 1.12 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.