(16666) Liroma Main-belt Asteroid
Discovered on 7 December 1993 by C. S. Shoemaker at Palomar.
The Meiers are a family of amateur astronomers living near Ottawa, Ontario. Linda (b. 1950) is an active observer. Between 1978 and 1984, Rolf (b. 1953) discovered four comets and has recently built an observatory. Son Matthew (b. 1985) has joined the Royal Astronomical Society of Canada's Ottawa Center.Naming citation (20010109/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Liroma is today
Seen from above the solar system on 2026-10-14: Liroma is 1.90 au from the Sun and 2.44 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 16666 |
| Provisional designation | 1993 XL1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.77 km (#7,920 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.352 |
| Rotation period | 79.0 hours |
| Absolute magnitude (H) | 12.88 |
| Orbital period | 3.61 years |
| Semi-major axis | 2.35 au |
| Perihelion – aphelion | 1.79 – 2.92 au |
| Eccentricity | 0.239 |
| Inclination | 23.1° |
| Closest distance between its orbit and Earth's (MOID) | 0.828 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.