(229781) Arthurmcdonald Main-belt Asteroid
Discovered on 3 August 2008 by at Vallemare Borbona 100610 Casulli, V. S..
Where Arthurmcdonald is today
Seen from above the solar system on 2026-10-14: Arthurmcdonald is 3.30 au from the Sun and 2.60 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 229781 |
| Provisional designation | 2008 PS1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.47 km (#9,767 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0370 |
| Absolute magnitude (H) | 15.57 |
| Orbital period | 5.62 years |
| Semi-major axis | 3.16 au |
| Perihelion – aphelion | 2.91 – 3.41 au |
| Eccentricity | 0.0803 |
| Inclination | 14.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.89 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.