(10655) Pietkeyser Main-belt Asteroid
Discovered on 17 October 1960 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Dutch navigator Pieter Dirkszoon Keyser (c. 1540-1596) sailed to the East Indies in 1595. He is credited with having invented twelve new constellations in the southern sky, first depicted in 1598 on a globe by Petrus Plancius.Naming citation (20021120/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Pietkeyser is today
Seen from above the solar system on 2026-10-14: Pietkeyser is 2.93 au from the Sun and 3.92 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10655 |
| Provisional designation | 9535 P-L |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.19 km (#12,299 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.253 |
| Rotation period | 94.0 hours |
| Absolute magnitude (H) | 14.36 |
| Orbital period | 4.53 years |
| Semi-major axis | 2.74 au |
| Perihelion – aphelion | 2.54 – 2.93 au |
| Eccentricity | 0.0718 |
| Inclination | 6.38° |
| Closest distance between its orbit and Earth's (MOID) | 1.54 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Pieter
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- (9071) Coudenberghe
- (9664) Brueghel
- (10970) de Zeeuw
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- (14019) Pourbus
- (15468) Mondriaan
- (20068) Peterbarthel
- (29212) Zeeman
- (52226) Saenredam
- (333514) Kallemeyn
All asteroids named after someone called Pieter
Also discovered on 17 October 1960
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- (2412) Wil
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- (3279) Solon
- (3604) Berkhuijsen
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