(1409) Isko Main-belt Asteroid
Discovered on 8 January 1937 by K. Reinmuth at Heidelberg.
Where Isko is today
Seen from above the solar system on 2026-10-14: Isko is 2.65 au from the Sun and 2.69 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1409 |
| Provisional designation | 1937 AK |
| Orbit class | Main-belt Asteroid |
| Diameter | 35.5 km (#1,133 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0805 |
| Rotation period | 11.6 hours |
| Absolute magnitude (H) | 11.09 |
| Orbital period | 4.38 years |
| Semi-major axis | 2.68 au |
| Perihelion – aphelion | 2.52 – 2.83 au |
| Eccentricity | 0.0567 |
| Inclination | 6.71° |
| Closest distance between its orbit and Earth's (MOID) | 1.53 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.