Related Directory Categories
- EOS (33)
- Capcom vs. SNK 2 - EO (8)
- Canon EOS-300D (8)
- Canon EOS-300D (5)
- Eos (2)
Sources
open directory project
Help build the largest human-edited directory on the web.
Submit a site - Become an editor
Wikipedia. Licensed under the GNU Free Documentation License.
Are you an expert in this subject? Join the discussion and share your knowledge at Wikipedia.org.
221 Eos
From Wikipedia, the free encyclopedia
| Discovery | |
|---|---|
| Discovered by: | Johann Palisa |
| Discovery date: | January 18, 1882 |
| Alternative names: | n/a |
| Minor planet category: | Main belt (Eos) |
| Orbital characteristics | |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion distance: | 496.912 Gm (3.322 AU) |
| Perihelion distance: | 404.104 Gm (2.701 AU) |
| Semi-major axis: | 450.508 Gm (3.011 AU) |
| Eccentricity: | 0.103 |
| Orbital period: | 1908.778 d (5.23 a) |
| Avg. orbital speed: | 17.16 km/s |
| Mean anomaly: | 351.618° |
| Inclination: | 10.887° |
| Longitude of ascending node: | 141.959° |
| Argument of perihelion: | 196.03° |
| Physical characteristics | |
| Dimensions: | 104.0 km |
| Mass: | unknown |
| Mean density: | unknown |
| Equatorial surface gravity: | unknown |
| Escape velocity: | unknown |
| Rotation period: | 10.436 h |
| Albedo: | 0.140 |
| Temperature: | unknown |
| Spectral type: | K |
| Absolute magnitude: | 7.67 |
221 Eos is a rather large main belt asteroid. It is classified as a K-type asteroid.
The extensive Eos asteroid family is named after it.
It was discovered by Johann Palisa on January 18, 1882 in Vienna and was named after Eos, Greek goddess of dawn.
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
| Minor planets | ||
|---|---|---|
| Previous minor planet | 221 Eos | 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.