(691) Lehigh Main-belt Asteroid
Discovered on 11 December 1909 by J. H. Metcalf at Taunton.
Where Lehigh is today
Seen from above the solar system on 2026-10-14: Lehigh is 3.38 au from the Sun and 4.36 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 691 |
| Provisional designation | A909 XB |
| Orbit class | Main-belt Asteroid |
| Diameter | 79.5 km (#384 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0530 |
| Rotation period | 12.9 hours |
| Spectral type | CD: |
| Absolute magnitude (H) | 9.31 |
| Orbital period | 5.22 years |
| Semi-major axis | 3.01 au |
| Perihelion – aphelion | 2.63 – 3.39 au |
| Eccentricity | 0.126 |
| Inclination | 13.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.66 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.