251 Sophia
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| Discovery A | |
|---|---|
| Discoverer | Johann Palisa |
| Discovery date | October 4, 1885 |
| Alternate designations B |
A907 UA, 1950 RH1, 1953 FN1 |
| Category | Main belt |
| Orbital elements C | |
|
|
|
| Eccentricity (e) | 0.106 |
| Semi-major axis (a) | 462.669 Gm (3.093 AU) |
| Perihelion (q) | 413.717 Gm (2.766 AU) |
| Aphelion (Q) | 511.622 Gm (3.42 AU) |
| Orbital period (P) | 1986.59 d (5.44 a) |
| Mean orbital speed | 16.94 km/s |
| Inclination (i) | 10.527° |
| Longitude of the ascending node (Ω) |
156.314° |
| Argument of perihelion (ω) |
287.098° |
| Mean anomaly (M) | 258.426° |
| Physical characteristics D | |
| Dimensions | 28.0 km |
| Mass | unknown |
| Density | unknown |
| Surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | 20.216 h |
| Spectral class | unknown |
| Absolute magnitude | 10.0 |
| Albedo (geometric) | 0.219 |
| Mean surface temperature |
unknown |
251 Sophia is a main belt asteroid.
It was discovered by Johann Palisa on October 4, 1885 in Vienna and was named after Sophia, wife of astronomer Hugo von Seeliger.
[edit] References
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
- Minor Planet Lightcurve Parameters
| Minor planets | ||
|---|---|---|
| Previous minor planet | 251 Sophia | 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.
