236 Honoria

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236 Honoria
Discovered by Johann Palisa
Discovery date April 26, 1884
A904 PA, 1930 KK,
1953 GJ1
Main belt
Orbital characteristics[1]
Epoch 30 January 2005 (JD 2453400.5)
Aphelion 498.181 Gm (3.33 AU)
Perihelion 339.271 Gm (2.268 AU)
418.726 Gm (2.799 AU)
Eccentricity 0.19
1710.398 d (4.68 a)
17.8 km/s
Inclination 7.694°
Physical characteristics
Dimensions 86.0 km
12.333 h
Albedo 0.127
Spectral type

236 Honoria is a large main belt asteroid that was discovered by Austrian astronomer Johann Palisa on April 26, 1884 in Vienna. The asteroid was named after Honoria, granddaughter of the Roman Emperor Theodosius I, who started negotiations with Attila the Hun. It is classified as a stony S-type asteroid based upon its spectrum.

Polarimetric study of this asteroid reveals anomalous properties that suggests the regolith consists of a mixture of low and high albedo material. This may have been caused by fragmentation of an asteroid substrate with the spectral properties of CO3/CV3 carbonaceous chondrites.[2]


  1. ^ Yeomans, Donald K., "236 Honoria", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-30. 
  2. ^ Gil-Hutton, R.; et al. (April 2008), "New cases of unusual polarimetric behavior in asteroids", Astronomy and Astrophysics 482 (1), pp. 309–314, Bibcode:2008A&A...482..309G, doi:10.1051/0004-6361:20078965. 

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