220 Stephania
|
A three-dimensional model of 220 Stephania based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 19 May 1881 |
| Designations | |
Named after | Princess Stéphanie |
|
1925 VE, 1931 FP, 1932 UA, 1943 WB, 1946 MA, 1950 TT4, 1961 WB | |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.06 yr (31068 d) |
| Aphelion | 2.95445 AU (441.979 Gm) |
| Perihelion | 1.74096 AU (260.444 Gm) |
| 2.34770 AU (351.211 Gm) | |
| Eccentricity | 0.25844 |
| 3.60 yr (1313.9 d) | |
Average orbital speed | 19.44 km/s |
| 129.627° | |
| 0° 16m 26.375s / day | |
| Inclination | 7.58954° |
| 257.986° | |
| 78.4149° | |
| Earth MOID | 0.750195 AU (112.2276 Gm) |
| Jupiter MOID | 2.47966 AU (370.952 Gm) |
| Jupiter Tisserand parameter | 3.503 |
| Physical characteristics | |
| Dimensions | 31.12±1.5 km |
| Mass | unknown |
Mean density | unknown |
Equatorial surface gravity | unknown |
Equatorial escape velocity | unknown |
| 18.198 h (0.7583 d) | |
| 0.0726±0.007 | |
| Temperature | unknown |
| P | |
| 11.2 | |
|
| |
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220 Stephania is a Main belt asteroid. It is a P-type asteroid, meaning it is relatively dark and composed of organic rich silicates, carbon and anhydrous silicates.
It was discovered by Johann Palisa on May 19, 1881 in Vienna. It was the first discovery he made after transferring to the observatory from Pola.[2]
The name honours Crown Princess Stéphanie, wife of the heir-apparent Crown Prince Rudolf of Austria. The couple was married the year the asteroid was discovered. It was the first time that a naming commemorated a wedding and was given as a wedding gift.[2]
Lightcurve data has also been recorded by observers at the Antelope Hill Observatory, which has been designated as an official observatory by the Minor Planet Center.[3]
References
- ↑ "220 Stephania". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
- 1 2 Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN 3-540-00238-3.
- ↑ Lightcurve Results
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
External links
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