(17737) Sigmundjahn Main-belt Asteroid
Discovered on 27 January 1998 by J. Kandler at Drebach.
Sigmund Jähn (b. 1937) was the first German to travel into space. In August 1978 he spent nine days in the Soviet space station Salyut 6, together with the Russian commander Valery Bykovsky. Today Jähn works in the astronaut training center of DLR, the German Research Center for Aeronautics and Astronautics.Naming citation (20010109/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Sigmundjahn is today
Seen from above the solar system on 2026-10-14: Sigmundjahn is 2.75 au from the Sun and 2.38 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 17737 |
| Provisional designation | 1998 BF14 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.17 km (#10,318 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0690 |
| Absolute magnitude (H) | 15.09 |
| Orbital period | 3.80 years |
| Semi-major axis | 2.43 au |
| Perihelion – aphelion | 2.08 – 2.78 au |
| Eccentricity | 0.144 |
| Inclination | 6.49° |
| Closest distance between its orbit and Earth's (MOID) | 1.10 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.