(259) Aletheia Main-belt Asteroid
Discovered on 28 June 1886 by C. H. F. Peters at Clinton.
Where Aletheia is today
Seen from above the solar system on 2026-10-14: Aletheia is 3.16 au from the Sun and 2.33 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 259 |
| Provisional designation | A886 MA |
| Orbit class | Main-belt Asteroid |
| Diameter | 174 km (#48 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0430 |
| Rotation period | 8.14 hours |
| Spectral type | CP |
| Absolute magnitude (H) | 7.8 |
| Orbital period | 5.55 years |
| Semi-major axis | 3.13 au |
| Perihelion – aphelion | 2.73 – 3.54 au |
| Eccentricity | 0.130 |
| Inclination | 10.8° |
| Closest distance between its orbit and Earth's (MOID) | 1.71 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by C. H. F. Peters
- (72) Feronia
- (75) Eurydike
- (77) Frigga
- (85) Io
- (88) Thisbe
- (92) Undina
- (98) Ianthe
- (102) Miriam
- (109) Felicitas
- (111) Ate
- (112) Iphigenia
- (114) Kassandra
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