A spectral comparison of (379) Huenna and its satellite

作者：DeMeo Francesca E^*; Carry Benoit; Marchis Franck; Birlan Mirel; Binzel Richard P; Bus Schelte J; Descamps Pascal; Nedelcu Alin; Busch Michael; Bouy Herve

来源：Icarus, 2011, 212(2): 677-681.

DOI：10.1016/j.icarus.2011.02.002

• Asteroids
• Spectroscopy

We present near-infrared spectral measurements of Themis family Asteroid (379) Huenna (D similar to 98 km) and its 6 km satellite using SpeX on the NASA IRTF. The companion was farther than 1.5 '' from the primary at the time of observations and was approximately 5 magnitudes dimmer. We describe a method for separating and extracting the signal of a companion asteroid when the signal is not entirely resolved from the primary. The spectrum of (379) Huenna has a broad, shallow feature near 1 mu m and a low slope, characteristic of C-type asteroids. The secondary's spectrum is consistent with the taxonomic classification of C-complex or X-complex. The quality of the data was not sufficient to identify any subtle feature in the secondary's spectrum.

• 出版日期2011-4