220 Stephania

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220 Stephania
220Stephania (Lightcurve Inversion).png
A three-dimensional model of 220 Stephania based on its light curve.
Discovered by Johann Palisa
Discovery date 19 May 1881
MPC designation (220) Stephania
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)
19.44 km/s
0° 16m 26.375s / day
Inclination 7.58954°
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
Equatorial surface gravity
Equatorial escape velocity
18.198 h (0.7583 d)
Temperature unknown

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]


  1. ^ "220 Stephania". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016. 
  2. ^ a b Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN 3-540-00238-3.
  3. ^ Lightcurve Results

External links[edit]