(299) Thora Main-belt Asteroid
Discovered on 6 October 1890 by J. Palisa at Vienna.
👶 Thora as a baby name🐶 Thora as a dog name
Where Thora is today
Seen from above the solar system on 2026-10-14: Thora is 2.40 au from the Sun and 2.21 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 299 |
| Provisional designation | A890 TA |
| Orbit class | Main-belt Asteroid |
| Diameter | 15.8 km (#2,943 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.251 |
| Rotation period | 273 hours |
| Absolute magnitude (H) | 11.35 |
| Orbital period | 3.80 years |
| Semi-major axis | 2.43 au |
| Perihelion – aphelion | 2.28 – 2.59 au |
| Eccentricity | 0.0624 |
| Inclination | 1.61° |
| Closest distance between its orbit and Earth's (MOID) | 1.29 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.