(10421) Dalmatin Main-belt Asteroid
Discovered on 9 January 1999 by K. Korlevic at Visnjan.
Herman Dalmatin (1110-1154) is also known as Hermanus Dalmata. Born inland from the Istrian peninsula, he translated many astronomical and mathematics books from Arabic to Latin.Naming citation (20051215/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Dalmatin is today
Seen from above the solar system on 2026-10-14: Dalmatin is 2.58 au from the Sun and 3.55 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10421 |
| Provisional designation | 1999 AY6 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.10 km (#8,778 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.143 |
| Rotation period | 3.00 hours |
| Absolute magnitude (H) | 14.1 |
| Orbital period | 3.76 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 1.88 – 2.95 au |
| Eccentricity | 0.221 |
| Inclination | 1.53° |
| Closest distance between its orbit and Earth's (MOID) | 0.874 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Herman
All asteroids named after someone called Herman