Artículo

Moskovitz, N.A.; Abe, S.; Pan, K.-S.; Osip, D.J.; Pefkou, D.; Melita, M.D.; Elias, M.; Kitazato, K.; Bus, S.J.; DeMeo, F.E.; Binzel, R.P.; Abell, P.A. "Rotational characterization of Hayabusa II target Asteroid (162173) 1999 JU3" (2013) Icarus. 224(1):24-31
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Abstract:

The Japanese Space Agency's Hayabusa II mission is scheduled to rendezvous with and return a sample from the near-Earth Asteroid (162173) 1999 JU3. Previous visible-wavelength spectra of this object show significant variability across multiple epochs which has been attributed to a compositionally heterogeneous surface. We present new visible and near-infrared spectra to demonstrate that thermally altered carbonaceous chondrites are plausible compositional analogs, however this is a tentative association due to a lack of prominent absorption features in our data. We have also conducted a series of high signal-to-noise visible-wavelength observations to investigate the reported surface heterogeneity. Our time series of visible spectra do not show variability at a precision level of a few percent. This result suggests two most likely possibilities. One, that the surface of 1999 JU3 is homogenous and that unaccounted for systematic effects are causing spectral variation across epochs. Or two, that the surface of 1999 JU3 is regionally heterogenous, in which case existing shape models suggest that any heterogeneity must be limited to terrains smaller than approximately 5% of the total surface area. These new observations represent the last opportunity before both the launch and return of the Hayabusa II spacecraft to perform ground-based characterization of this asteroid. Ultimately, these predictions for composition and surface properties will be tested upon completion of the mission. © 2013 Elsevier Inc.

Registro:

Documento: Artículo
Título:Rotational characterization of Hayabusa II target Asteroid (162173) 1999 JU3
Autor:Moskovitz, N.A.; Abe, S.; Pan, K.-S.; Osip, D.J.; Pefkou, D.; Melita, M.D.; Elias, M.; Kitazato, K.; Bus, S.J.; DeMeo, F.E.; Binzel, R.P.; Abell, P.A.
Filiación:Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, 77 Massachusetts Avenue, Cambridge, MA 02139, United States
Carnegie Institution of Washington, Department of Terrestrial Magnetism, 5241 Broad Branch Road, Washington, DC 20008, United States
National Central University, Institute of Astronomy, 300 Jhongda Road, Jhongli, Taoyuan 32001, Taiwan
Carnegie Institution of Washington, Las Campanas Observatory, Colina El Pino, Casilla 601 La Serena, Chile
Universidad de Buenos Aires, Instituto de Astronomica y Fisica del Espacio, Buenos Aires, Argentina
The University of Aizu, Research Center for Advanced Information Science and Technology, Ikki-machi, Aizu-Wakamatsu, Fukushima 965-8580, Japan
University of Hawaii, Institute for Astronomy, 640 N. A'ohoku Place, Hilo, HI 96720, United States
NASA Johnson Space Center, Astromaterials Research and Exploration Science Directorate, Houston, TX 77058, United States
Palabras clave:Asteroids; Asteroids, Rotation; Composition; Photometry; Spectroscopy
Año:2013
Volumen:224
Número:1
Página de inicio:24
Página de fin:31
DOI: http://dx.doi.org/10.1016/j.icarus.2013.02.009
Título revista:Icarus
Título revista abreviado:Icarus
ISSN:00191035
CODEN:ICRSA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00191035_v224_n1_p24_Moskovitz

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Citas:

---------- APA ----------
Moskovitz, N.A., Abe, S., Pan, K.-S., Osip, D.J., Pefkou, D., Melita, M.D., Elias, M.,..., Abell, P.A. (2013) . Rotational characterization of Hayabusa II target Asteroid (162173) 1999 JU3. Icarus, 224(1), 24-31.
http://dx.doi.org/10.1016/j.icarus.2013.02.009
---------- CHICAGO ----------
Moskovitz, N.A., Abe, S., Pan, K.-S., Osip, D.J., Pefkou, D., Melita, M.D., et al. "Rotational characterization of Hayabusa II target Asteroid (162173) 1999 JU3" . Icarus 224, no. 1 (2013) : 24-31.
http://dx.doi.org/10.1016/j.icarus.2013.02.009
---------- MLA ----------
Moskovitz, N.A., Abe, S., Pan, K.-S., Osip, D.J., Pefkou, D., Melita, M.D., et al. "Rotational characterization of Hayabusa II target Asteroid (162173) 1999 JU3" . Icarus, vol. 224, no. 1, 2013, pp. 24-31.
http://dx.doi.org/10.1016/j.icarus.2013.02.009
---------- VANCOUVER ----------
Moskovitz, N.A., Abe, S., Pan, K.-S., Osip, D.J., Pefkou, D., Melita, M.D., et al. Rotational characterization of Hayabusa II target Asteroid (162173) 1999 JU3. Icarus. 2013;224(1):24-31.
http://dx.doi.org/10.1016/j.icarus.2013.02.009