220 Stephania

220 Stephania

Infobox Planet | discovery=yes | physical_characteristics = yes | bgcolour=#FFFFC0 | name=220 Stephania
discoverer=Johann Palisa
discovered=May 19, 1881
alt_names=1925 VE, 1931 FP,
1932 UA, 1943 WB,
1946 MA, 1950 TT4,
1961 WB
mp_category=Main belt
epoch=30 January, 2005 (JD 2453400.5)
semimajor=351.277 Gm (2.348 AU)
perihelion=260.473 Gm (1.741 AU)
aphelion=442.081 Gm (2.955 AU)
eccentricity=0.258
period=1314.246 d (3.6 a)
inclination=7.585°
asc_node=258.057°
arg_peri=78.595°
mean_anomaly=59.033°
avg_speed=19.44 km/s
dimensions=31.0 km
mass="unknown"
density="unknown"
surface_grav="unknown"
escape_velocity="unknown"
rotation=18.198 h
spectral_type=P
abs_magnitude=11.0
albedo=0.073
single_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.Fact|date=March 2008

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. [ Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN-10: 3540002383.]

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. [ [http://www.antelopehillsobservatory.org/index_files/Page334.htm Lightcurve Results ] ]

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. [ Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN-10: 3540002383.]

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. [ [http://www.antelopehillsobservatory.org/index_files/Page334.htm Lightcurve Results ] ]

References

* [ftp://ftp.lowell.edu/pub/elgb/astorb.html The Asteroid Orbital Elements Database]
* [http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html Minor Planet Discovery Circumstances]
* [http://spiff.rit.edu/richmond/parallax/phot/LCSUMPUB.TXT Asteroid Lightcurve Data File]


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