(10148) Shirase Outer Main-belt Asteroid
Discovered on 14 April 1994 by S. Otomo at Kiyosato.
The adventurer Nobu Shirase (1861-1946) was the first Japanese to explore Antarctica, reaching latitude -80°05' on 1912 Jan. 28.Naming citation (20031110/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Shirase is today
Seen from above the solar system on 2026-10-14: Shirase is 3.59 au from the Sun and 3.16 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10148 |
| Provisional designation | 1994 GR9 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 15.5 km (#3,011 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0800 |
| Absolute magnitude (H) | 12.74 |
| Orbital period | 5.75 years |
| Semi-major axis | 3.21 au |
| Perihelion – aphelion | 2.76 – 3.66 au |
| Eccentricity | 0.140 |
| Inclination | 0.454° |
| Closest distance between its orbit and Earth's (MOID) | 1.75 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.