259 Aletheia
From Wikipedia, the free encyclopedia
| Discovery A | |
|---|---|
| Discoverer | C. H. F. Peters |
| Discovery date | June 28, 1886 |
| Alternate designations B |
1947 LD |
| Category | Main belt |
| Orbital elements C | |
|
|
|
| Eccentricity (e) | 0.121 |
| Semi-major axis (a) | 469.814 Gm (3.141 AU) |
| Perihelion (q) | 412.767 Gm (2.759 AU) |
| Aphelion (Q) | 526.86 Gm (3.522 AU) |
| Orbital period (P) | 2032.78 d (5.57 a) |
| Mean orbital speed | 16.81 km/s |
| Inclination (i) | 10.815° |
| Longitude of the ascending node (Ω) |
87.151° |
| Argument of perihelion (ω) |
168.896° |
| Mean anomaly (M) | 116.287° |
| Physical characteristics D | |
| Dimensions | 179.0 km |
| Mass | unknown |
| Density | unknown |
| Surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | 15 h |
| Spectral class | CP |
| Absolute magnitude | 7.76 |
| Albedo (geometric) | 0.043 |
| Mean surface temperature |
unknown |
259 Aletheia is a very large Main belt asteroid. It is composed of primitive carbonaceous materials and is very dark in colour, darker than coal.
It was discovered by C. H. F. Peters on June 28, 1886 in Clinton, New York.
It is named after the Greek goddess Aletheia.
[edit] References
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
| Minor planets | ||
|---|---|---|
| Previous minor planet | 259 Aletheia | Next minor planet |
| List of asteroids | ||
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.
