(2204) Lyyli Mars-crossing Asteroid
Discovered on 3 March 1943 by Y. Vaisala at Turku.
Where Lyyli is today
Seen from above the solar system on 2026-10-14: Lyyli is 2.39 au from the Sun and 3.35 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2204 |
| Provisional designation | 1943 EQ |
| Orbit class | Mars-crossing Asteroid |
| Diameter | 25.2 km (#1,681 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0232 |
| Rotation period | 11.1 hours |
| Spectral type | X |
| Absolute magnitude (H) | 12.17 |
| Orbital period | 4.17 years |
| Semi-major axis | 2.59 au |
| Perihelion – aphelion | 1.54 – 3.64 au |
| Eccentricity | 0.406 |
| Inclination | 20.6° |
| Closest distance between its orbit and Earth's (MOID) | 0.688 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.