SIMBAD references

2004NewA....9..343B - New Astronomy, 9, 343-351 (2004/June-0)

Near-IR spectroscopy of asteroids 21 Lutetia, 89 Julia, 140 Siwa, 2181 Fogelin and 5480 (1989YK8), potential targets for the Rosetta mission - remote observations campaign on IRTF.

BIRLAN M., BARUCCI M.A., VERNAZZA P., FULCHIGNONI M., BINZEL R.P., BUS S.J., BELSKAYA I. and FORNASIER S.

Abstract (from CDS):

In the frame of the international campaign to observe potential target asteroids for the Rosetta mission, remote observations have been carried out between Observatoire de Paris, in Meudon-France and the NASA Infrared Telescope Facility on Mauna Kea. The SpeX instrument was used in the 0.8-2.5 mum spectral region, for two observing runs in March and June 2003. This paper presents near-IR spectra of the asteroids 21 Lutetia, 89 Julia, 140 Siwa, 2181 Fogelin and 5480 (1989YK8). Near-IR spectra of the asteroids 21 Lutetia and 140 Siwa are flat and featureless. The spectrum of 89 Julia reveals absorption bands around 1 and 2 mum, which may indicate the presence of olivine and olivine-pyroxene mixtures and confirm the S-type designation. The small main-belt asteroids 2181 Fogelin and 5480 (1989YK8) are investigated spectroscopically for the first time. Near-IR spectra of these asteroids also show an absorption feature around 1 mum, which could be and indicator of igneous/metamorphic surface of the objects; new observations in visible as well as thermal albedo data are necessary to draw a reliable conclusion on the surface mineralogy of both asteroids.

Abstract Copyright:

Journal keyword(s): Methods: miscellaneous - Techniques: spectroscopic - Minor planets - asteroids - Infrared: solar system

Simbad objects: 9

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2019.10.16-07:58:54

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