257 Silesia

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257 Silesia
257Silesia (Lightcurve Inversion).png
Light curve-based 3D-model of 257 Silesia
Discovery [1]
Discovered by J. Palisa
Discovery site Vienna Observatory
Discovery date 5 April 1886
Designations
MPC designation 257 Silesia
Named after
Silesia (region)[2]
1929 DD · 1952 FL1
1952 HU
main-belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 129.94 yr (47462 d)
Aphelion 3.4669 AU (518.64 Gm)
Perihelion 2.7711 AU (414.55 Gm)
3.1190 AU (466.60 Gm)
Eccentricity 0.11154
5.51 yr (2012.0 d)
30.606°
0° 10m 44.148s / day
Inclination 3.6351°
34.364°
27.605°
Earth MOID 1.78299 AU (266.732 Gm)
Jupiter MOID 1.8503 AU (276.80 Gm)
Jupiter Tisserand parameter 3.204
Physical characteristics
Dimensions 72.66±2.2 km
15.7095 h (0.65456 d)
0.0545±0.003
B–V = 0.761
U–B = 0.384
SCTU (Tholen)
Ch (SMASS)
9.47

257 Silesia is a large Main belt asteroid, about 73 kilometers in diameter. It was discovered by Johann Palisa on April 5, 1886 at Vienna Observatory, Austria.

It is named after Silesia, the province of the discoverer's birthplace, now located in the Czech Republic. The by far largest part of Silesia nowadays belongs to Poland.[2]

References[edit]

  1. ^ a b "JPL Small-Body Database Browser: 257 Silesia" (2015-09-16 last obs.). Jet Propulsion Laboratory. Retrieved 11 May 2016. 
  2. ^ a b Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (257) Silesia. Springer Berlin Heidelberg. p. 38. ISBN 978-3-540-29925-7. Retrieved October 2015. 

External links[edit]