(1559) Kustaanheimo Main-belt Asteroid
Discovered on 20 January 1942 by L. Oterma at Turku.
Where Kustaanheimo is today
Seen from above the solar system on 2026-10-14: Kustaanheimo is 2.34 au from the Sun and 2.30 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1559 |
| Provisional designation | 1942 BF |
| Orbit class | Main-belt Asteroid |
| Diameter | 10.7 km (#4,718 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.267 |
| Rotation period | 4.30 hours |
| Absolute magnitude (H) | 12.06 |
| Orbital period | 3.69 years |
| Semi-major axis | 2.39 au |
| Perihelion – aphelion | 2.06 – 2.71 au |
| Eccentricity | 0.136 |
| Inclination | 3.19° |
| Closest distance between its orbit and Earth's (MOID) | 1.07 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.