(138) Tolosa Main-belt Asteroid
Discovered on 19 May 1874 by J. Perrotin at Toulouse.
Where Tolosa is today
Seen from above the solar system on 2026-10-14: Tolosa is 2.75 au from the Sun and 3.65 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 138 |
| Provisional designation | A874 KA |
| Orbit class | Main-belt Asteroid |
| Diameter | 52.9 km (#695 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.273 |
| Rotation period | 10.1 hours |
| Spectral type | S |
| Absolute magnitude (H) | 9.01 |
| Orbital period | 3.84 years |
| Semi-major axis | 2.45 au |
| Perihelion – aphelion | 2.05 – 2.85 au |
| Eccentricity | 0.163 |
| Inclination | 3.20° |
| Closest distance between its orbit and Earth's (MOID) | 1.04 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by J. Perrotin
← (137) Meliboea · (139) Juewa →