Photometric survey and taxonomic identifications of 92 near-Earth asteroids

Chien Hsien Lin, Wing Huen Ip, Zhong Yi Lin, Yu Chi Cheng, Hsing Wen Lin, Chan Kao Chang

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8 Scopus citations

Abstract

A photometric survey of near-Earth asteroids (NEAs) was conducted from 2012 through 2014 at Lulin Observatory, Taiwan. The measurements of the color indices, B-V, V-R, and V-I allow the classification of 92 NEAs into seven taxonomic types. Of these samples, 39 of them are new classifications. The fractional abundances of these taxonomic complexes are: A ∼3%, C∼6.5%, D∼8%, Q∼26%, S∼37%, V∼6.5%, and X∼13%. This result is similar to that of Thomas et al. (2011) even though the populations of the D- and X-complex with low albedos are under-represented. The ratio of the C-cluster to the total population of S + C clusters are 0.22 ± 0.06 for H ≤ 17.0 and 0.31 ± 0.06 for H > 17.0, indicating a slightly higher fraction of dark-object population with sizes smaller than 1 km.

Original languageEnglish
Pages (from-to)116-135
Number of pages20
JournalPlanetary and Space Science
Volume152
DOIs
StatePublished - Mar 2018

Keywords

  • Near-Earth asteroids
  • Photometry
  • Taxonomy

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