(2138) Swissair Main-belt Asteroid
Discovered on 17 April 1968 by P. Wild at Zimmerwald.
Named for the Swiss national airline, the international designation of which is HB.Naming citation (MPC 5360), IAU / Minor Planet Center, via NASA/JPL
Where Swissair is today
Seen from above the solar system on 2026-10-14: Swissair is 2.53 au from the Sun and 2.37 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2138 |
| Provisional designation | 1968 HB |
| Orbit class | Main-belt Asteroid |
| Diameter | 15.3 km (#3,065 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.207 |
| Rotation period | 376 hours |
| Absolute magnitude (H) | 11.61 |
| Orbital period | 4.40 years |
| Semi-major axis | 2.69 au |
| Perihelion – aphelion | 2.50 – 2.87 au |
| Eccentricity | 0.0689 |
| Inclination | 5.93° |
| Closest distance between its orbit and Earth's (MOID) | 1.48 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.