Astronomy:508 Princetonia

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Short description: Main-belt asteroid, discovered 1903
508 Princetonia
000508-asteroid shape model (508) Princetonia.png
Shape of Princetonia from modeled lightcurve
Discovery
Discovered byRaymond Smith Dugan
Discovery siteHeidelberg Observatory
Discovery date20 April 1903
Designations
(508) Princetonia
Pronunciation/prɪnˈstniə/[1]
1903 LQ
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc107.99 yr (39445 d)
|{{{apsis}}}|helion}}3.1869 astronomical unit|AU (476.75 Gm)
|{{{apsis}}}|helion}}3.1353 AU (469.03 Gm)
3.1611 AU (472.89 Gm)
Eccentricity0.0081585
Orbital period5.62 yr (2052.8 d)
Mean anomaly25.2307°
Mean motion0° 10m 31.332s / day
Inclination13.337°
Longitude of ascending node44.223°
195.015°
Physical characteristics
Mean radius71.175±1.3 km[2]
69.845 ± 1.7 km[3]
Mass(2.99 ± 0.65) × 1018 kg[3]
Mean density2.09 ± 0.47 g/cm3[3]
Rotation period52.8 h (2.20 d)
Geometric albedo0.0441±0.002
Absolute magnitude (H)8.4


Princetonia (minor planet designation: 508 Princetonia) is a large asteroid, a type of minor planet, orbiting in the asteroid belt. It was discovered by Raymond Smith Dugan at Heidelberg, Germany in 1903 and named "Princetonia" for Princeton University in New Jersey in the United States .[4]

Dugan found it during his time at Königstuhl Observatory with Max Wolf in Heidelberg, Germany.[2] At the time he was working on his PhD from Heidelberg University. The asteroid is located in the outer areas of the main asteroid belt and is about 140 km (87 mi) in diameter according to data from IRAS, an infrared space observatory in the 1980s.[5]

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