Spectroscopy of Binary Asteroid 809 Lundia

Details Spectroscopy of Binary Asteroid 809 Lundia Spectroscopy of Binary Asteroid 809 Lundia

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dps....38.5903b&link_type=abstract

American Astronomical Society, DPS meeting #38, #59.03; Bulletin of the American Astronomical Society, Vol. 38, p.593

Astronomy and Astrophysics

Astronomy

Scientific paper

The asteroid 809 Lundia was reported as a V type asteroid by (Florczak et al, Icarus 159, 2002) based on spectroscopic observations in the visible region. Carruba et al (A&A, 441, 2005) argued the attachment of 809 Lundia to the Vesta family, the Yarkovsky effect and the secular resonances explaining in the drift of the orbital elements. Photometric observations of this asteroid allowed (Kryszczynska, CBAT 239, 2005) to detect that 809 Lundia is a binary system.
The aim of our near-IR spectroscopic observations, performed with SpeX/IRTF, has been to investigate a possible variation of the surface among the components of this double asteroid. Two spectra in the 0.8-2.5 µm spectral region in two peculiar geometries have been obtained. The spectra are typical of V-type asteroids. Moreover, we observe a clear spectral variation, and the differences between the spectra are over the error-bars. This result is consistent with a small variation of the surface composition and/or grain distribution between the components of binary system.

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