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 | |
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.[citation needed]
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[edit]
- ^ "220 Stephania". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
- ^ a b 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[edit]
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