(774) Armor Main-belt Asteroid
Discovered on 19 December 1913 by C. le Morvan at Paris.
Where Armor is today
Seen from above the solar system on 2026-10-14: Armor is 3.51 au from the Sun and 3.82 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 774 |
| Provisional designation | A913 YE |
| Orbit class | Main-belt Asteroid |
| Diameter | 50.2 km (#745 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.189 |
| Rotation period | 25.2 hours |
| Absolute magnitude (H) | 9.04 |
| Orbital period | 5.34 years |
| Semi-major axis | 3.06 au |
| Perihelion – aphelion | 2.56 – 3.55 au |
| Eccentricity | 0.164 |
| Inclination | 5.55° |
| Closest distance between its orbit and Earth's (MOID) | 1.54 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.