354 Eleonora
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Discovery A | |
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Discoverer | Auguste Charlois |
Discovery date | January 17, 1893 |
Alternate designations B |
1893 A |
Category | Main belt |
Orbital elements C | |
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Eccentricity (e) | 0.113 |
Semi-major axis (a) | 418.701 Gm (2.799 AU) |
Perihelion (q) | 371.553 Gm (2.484 AU) |
Aphelion (Q) | 465.848 Gm (3.114 AU) |
Orbital period (P) | 1710.242 d (4.68 a) |
Mean orbital speed | 17.8 km/s |
Inclination (i) | 18.385° |
Longitude of the ascending node (Ω) |
140.51° |
Argument of perihelion (ω) |
6.994° |
Mean anomaly (M) | 317.966° |
Physical characteristics D | |
Dimensions | 155.0 km |
Mass | unknown |
Density | unknown |
Surface gravity | unknown |
Escape velocity | unknown |
Rotation period | unknown |
Spectral class | S |
Absolute magnitude | 6.44 |
Albedo (geometric) | unknown |
Mean surface temperature |
unknown |
354 Eleonora is a very large Main belt asteroid. It is classified as an S-type asteroid.
It was discovered by Auguste Charlois on January 17, 1893 in Nice.
During favorable oppositions, such as in 1968 and 2010, Eleonora can reach an apparent magnitude of +9.31.
[edit] External links
- Orbital simulation from JPL (Java) / Ephemeris
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