(5263) Arrius Main-belt Asteroid
Discovered on 13 April 1991 by D. I. Steel at Siding Spring.
Where Arrius is today
Seen from above the solar system on 2026-10-14: Arrius is 3.16 au from the Sun and 3.75 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5263 |
| Provisional designation | 1991 GY9 |
| Orbit class | Main-belt Asteroid |
| Diameter | 25.6 km (#1,647 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0620 |
| Rotation period | 6.91 hours |
| Absolute magnitude (H) | 11.77 |
| Orbital period | 5.71 years |
| Semi-major axis | 3.19 au |
| Perihelion – aphelion | 3.14 – 3.25 au |
| Eccentricity | 0.0169 |
| Inclination | 14.8° |
| Closest distance between its orbit and Earth's (MOID) | 2.13 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.