21656 Knuth
| Discovery and designation | |
|---|---|
| Discovered by | P. Pravec and P. Kušnirák |
| Discovery site | Ondřejov |
| Discovery date | August 9, 1999 |
| Designations | |
| MPC designation | 21656 |
Named after | Donald Knuth |
| 1999 PX1 | |
| Orbital characteristics | |
| Epoch May 14, 2008 | |
| Aphelion | 3.3200848 |
| Perihelion | 2.1000056 |
| Eccentricity | 0.2251031 |
| 1629.5332994 | |
| 348.73309 | |
| Inclination | 9.25301 |
| 130.32996 | |
| 204.04123 | |
| Physical characteristics | |
| 14.7 | |
|
| |
21656 Knuth (1999 PX1) is a main-belt asteroid discovered on August 9, 1999 by P. Pravec and P. Kušnirák at the Ondřejov Observatory. It is named after Donald Knuth, a renowned computer scientist and mathematician, Professor Emeritus at Stanford University.
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