255 Oppavia
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| Discovery A | |
|---|---|
| Discoverer | Johann Palisa |
| Discovery date | March 31, 1886 |
| Alternate designations B |
A904 EC, A924 TA, 1938 VC, 1938 XC, 1945 GD, 1951 SG |
| Category | Main belt |
| Orbital elements C | |
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| Eccentricity (e) | 0.081 |
| Semi-major axis (a) | 410.561 Gm (2.744 AU) |
| Perihelion (q) | 377.374 Gm (2.523 AU) |
| Aphelion (Q) | 443.748 Gm (2.966 AU) |
| Orbital period (P) | 1660.616 d (4.55 a) |
| Mean orbital speed | 17.98 km/s |
| Inclination (i) | 9.486° |
| Longitude of the ascending node (Ω) |
13.774° |
| Argument of perihelion (ω) |
152.96° |
| Mean anomaly (M) | 74.62° |
| Physical characteristics D | |
| Dimensions | 57.0 km |
| Mass | unknown |
| Density | unknown |
| Surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | unknown |
| Spectral class | P |
| Absolute magnitude | 10.39 |
| Albedo (geometric) | 0.0374 |
| Mean surface temperature |
unknown |
255 Oppavia is a sizeable Main belt asteroid. It classified as a dark P-type asteroid.
It was discovered by Johann Palisa on March 31, 1886 in Vienna and was named after Opava, town in the Czech Republic (then part of Austria-Hungary), where Palisa was born.
Oppavia was long thought to be a member of the now defunct Ceres asteroid family, but was found to be an unrelated interloper on the basis of its non-matching spectral type.
[edit] External links
- Orbital simulation of asteroid 255 Oppavia
- Asteroid 255 Oppavia in Planetky z našich luhů a hájů (in Czech language)
[edit] References
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
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