(1404) Ajax Jupiter Trojan
Discovered on 17 August 1936 by K. Reinmuth at Heidelberg.
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Where Ajax is today
Seen from above the solar system on 2026-10-14: Ajax is 5.76 au from the Sun and 6.69 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1404 |
| Provisional designation | 1936 QW |
| Orbit class | Jupiter Trojan |
| Diameter | 84.0 km (#341 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0480 |
| Rotation period | 29.4 hours |
| Absolute magnitude (H) | 9.29 |
| Orbital period | 12.1 years |
| Semi-major axis | 5.28 au |
| Perihelion – aphelion | 4.69 – 5.88 au |
| Eccentricity | 0.112 |
| Inclination | 18.0° |
| Closest distance between its orbit and Earth's (MOID) | 3.74 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.