(26842) Hefele Main-belt Asteroid
Discovered on 2 October 1991 by Schmadel, L. D., Borngen, F. at Tautenburg.
Herbert Hefele (b. 1942) is a retired staff astronomer at the Astronomisches Rechen-Institut. He served for decades as an editor of the renowned bibliography Astronomy and Astrophysics Abstracts and also as an excellent librarian of the ARI. The name was suggested by the first discoverer.Naming citation (20080321/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Hefele is today
Seen from above the solar system on 2026-10-14: Hefele is 3.46 au from the Sun and 4.41 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 26842 |
| Provisional designation | 1991 TK6 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.43 km (#9,832 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.167 |
| Absolute magnitude (H) | 13.66 |
| Orbital period | 5.37 years |
| Semi-major axis | 3.06 au |
| Perihelion – aphelion | 2.52 – 3.61 au |
| Eccentricity | 0.177 |
| Inclination | 6.29° |
| Closest distance between its orbit and Earth's (MOID) | 1.54 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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