234 Barbara is a main belt asteroid that was discovered by German-American astronomer Christian Heinrich Friedrich Peters on August 12, 1883 in Clinton, New York. It is classified as a stony S-type asteroid based upon its spectrum. The mean diameter is estimated as 45.6 km.
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.
In 2009, it was discovered that 234 Barbara might be a double asteroid.
- ^ Yeomans, Donald K., "234 Barbara", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-30.
- ^ a b c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: 98-118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- ^ Gil-Hutton, R. et al. (April 2008), "New cases of unusual polarimetric behavior in asteroids", Astronomy and Astrophysics 482 (1): 309–314, Bibcode:2008A&A...482..309G, doi:10.1051/0004-6361:20078965.
- ^ http://www.astronews.com/news/artikel/2009/02/0902-006.shtml (in German)