(21601) Aias Jupiter Trojan
Discovered on 15 December 1998 by LINEAR at Socorro.
Aias, also known as Ajax the Lesser, was the leader of the Locrians who fought with the Acheans.Naming citation (WGSBN Bull. 5, #5, 22), IAU / Minor Planet Center, via NASA/JPL
Where Aias is today
Seen from above the solar system on 2026-10-14: Aias is 5.31 au from the Sun and 6.21 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21601 |
| Provisional designation | 1998 XO89 |
| Orbit class | Jupiter Trojan |
| Diameter | 54.9 km (#657 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0640 |
| Rotation period | 12.7 hours |
| Absolute magnitude (H) | 10.0 |
| Orbital period | 12.0 years |
| Semi-major axis | 5.25 au |
| Perihelion – aphelion | 5.05 – 5.45 au |
| Eccentricity | 0.0376 |
| Inclination | 19.4° |
| Closest distance between its orbit and Earth's (MOID) | 4.08 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 15 December 1998
- (11191) Paskvic
- (11395) Iphinous
- (11397) Eriopis
- (14189) Sevre
- (14190) Soldan
- (25309) Chrisauer
- (26345) Gedankien
- (28196) Szeged
- (29674) Rausal
- (29675) Ippolitonievo
- (29687) Mohdreza
- (29690) Nistala