(21655) Niklauswirth Main-belt Asteroid
Discovered on 8 August 1999 by L. Sarounova at Ondrejov.
Niklaus Wirth (b. 1934), professor of computer science variously at Stanford University, the University of Zurich and the Swiss Federal Institute of Technology, Zurich, created the computer languages ALGOL, Pascal and Modula. His ideas are widely used in the architecture of contemporary computer systems.Naming citation (20010902/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Niklauswirth is today
Seen from above the solar system on 2026-10-14: Niklauswirth is 3.11 au from the Sun and 3.59 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21655 |
| Provisional designation | 1999 PC1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.61 km (#8,114 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.194 |
| Rotation period | 18.8 hours |
| Absolute magnitude (H) | 13.34 |
| Orbital period | 4.31 years |
| Semi-major axis | 2.65 au |
| Perihelion – aphelion | 2.17 – 3.12 au |
| Eccentricity | 0.179 |
| Inclination | 13.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.16 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Niklaus
All asteroids named after someone called Niklaus
Also discovered on 8 August 1999
More named asteroids discovered by L. Sarounova
- (7670) Kabelac
- (7897) Bohuska
- (8557) Saroun
- (9449) Petrbondy
- (9671) Hemera
- (10215) Lavilledemirmont
- (10626) Zajic
- (10634) Pepibican
- (10919) Pepikzicha
- (11101) Ceskafilharmonie
- (11201) Talich
- (11325) Slavicky
← (21654) Telmo · (21656) Knuth →