Composition of hydrated near-Earth object (100085) 1992 UY4
Abstract
Near-infrared spectra of the near-Earth object (100085) 1992 UY4 are similar to those of P-type asteroids, providing a fitted geometric albedo of 0.052±0.005 and an effective diameter of 1.68±0.08 km. This object, with a likely outer-belt origin, also exhibits a 3-μm absorption feature with a band depth of 3%±1%, corresponding to a regolithic bulk hydrogen-to-silicon ratio of 0.30±0.05. The bulk of this hydrogen seems to be present in H 2O-dominated minerals.
- Publication:
-
Icarus
- Pub Date:
- April 2007
- DOI:
- 10.1016/j.icarus.2006.10.034
- Bibcode:
- 2007Icar..187..464V