(161230) Martinbachacek Main-belt Asteroid
Discovered on 13 December 2002 by KLENOT at Klet.
Martin Bacháček z Nauměřic (c. 1539–1612) was a Czech mathematician, astronomer and organizer of the education system. From 1603 to 1612 he served as the Rector of Charles University. He was a friend, collaborator and supporter of Johannes Kepler during the latter's time in Prague. Together they observed sunspots and the 1604 supernova.Naming citation (WGSBN Bull. 1, #13, 9), IAU / Minor Planet Center, via NASA/JPL
Where Martinbachacek is today
Seen from above the solar system on 2026-10-14: Martinbachacek is 2.91 au from the Sun and 3.90 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 161230 |
| Provisional designation | 2002 XO90 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 16.29 |
| Orbital period | 3.72 years |
| Semi-major axis | 2.40 au |
| Perihelion – aphelion | 1.82 – 2.98 au |
| Eccentricity | 0.242 |
| Inclination | 3.06° |
| Closest distance between its orbit and Earth's (MOID) | 0.818 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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