(191910) Elizawilliams Main-belt Asteroid
Discovered on 11 March 2005 by Mt. Lemmon Survey at Mount Lemmon.
Elizabeth Langdon Williams (1879–1981) was an American astronomer. In 1903 she was one of the earliest women to graduate from MIT, earning a degree in physics. Her mathematical computations supported the early 20th-century search for Planet X from Lowell Observatory in Flagstaff, Arizona.Naming citation (WGSBN Bull. 2, #7, 13), IAU / Minor Planet Center, via NASA/JPL
Where Elizawilliams is today
Seen from above the solar system on 2026-10-14: Elizawilliams is 2.70 au from the Sun and 3.09 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 191910 |
| Provisional designation | 2005 EO258 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.84 km (#10,940 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0630 |
| Absolute magnitude (H) | 15.63 |
| Orbital period | 5.61 years |
| Semi-major axis | 3.16 au |
| Perihelion – aphelion | 2.50 – 3.82 au |
| Eccentricity | 0.209 |
| Inclination | 4.69° |
| Closest distance between its orbit and Earth's (MOID) | 1.52 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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