Rotational characterization of Hayabusa II target Asteroid (162173) 1999 JU3

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 compositional...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: 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.
Formato: JOUR
Materias:
Asteroids
Asteroids, Rotation
Composition
Photometry
Spectroscopy
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00191035_v224_n1_p24_Moskovitz
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00191035_v224_n1_p24_Moskovitz
record_format dspace
spelling todo:paper_00191035_v224_n1_p24_Moskovitz2023-10-03T14:16:31Z Rotational characterization of Hayabusa II target Asteroid (162173) 1999 JU3 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. Asteroids Asteroids, Rotation Composition Photometry Spectroscopy 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00191035_v224_n1_p24_Moskovitz
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Asteroids
Asteroids, Rotation
Composition
Photometry
Spectroscopy
spellingShingle Asteroids
Asteroids, Rotation
Composition
Photometry
Spectroscopy
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
topic_facet Asteroids
Asteroids, Rotation
Composition
Photometry
Spectroscopy
description 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.
format JOUR
author 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.
author_facet 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.
author_sort Moskovitz, N.A.
title Rotational characterization of Hayabusa II target Asteroid (162173) 1999 JU3
title_short Rotational characterization of Hayabusa II target Asteroid (162173) 1999 JU3
title_full Rotational characterization of Hayabusa II target Asteroid (162173) 1999 JU3
title_fullStr Rotational characterization of Hayabusa II target Asteroid (162173) 1999 JU3
title_full_unstemmed Rotational characterization of Hayabusa II target Asteroid (162173) 1999 JU3
title_sort rotational characterization of hayabusa ii target asteroid (162173) 1999 ju3
url http://hdl.handle.net/20.500.12110/paper_00191035_v224_n1_p24_Moskovitz
work_keys_str_mv AT moskovitzna rotationalcharacterizationofhayabusaiitargetasteroid1621731999ju3
AT abes rotationalcharacterizationofhayabusaiitargetasteroid1621731999ju3
AT panks rotationalcharacterizationofhayabusaiitargetasteroid1621731999ju3
AT osipdj rotationalcharacterizationofhayabusaiitargetasteroid1621731999ju3
AT pefkoud rotationalcharacterizationofhayabusaiitargetasteroid1621731999ju3
AT melitamd rotationalcharacterizationofhayabusaiitargetasteroid1621731999ju3
AT eliasm rotationalcharacterizationofhayabusaiitargetasteroid1621731999ju3
AT kitazatok rotationalcharacterizationofhayabusaiitargetasteroid1621731999ju3
AT bussj rotationalcharacterizationofhayabusaiitargetasteroid1621731999ju3
AT demeofe rotationalcharacterizationofhayabusaiitargetasteroid1621731999ju3
AT binzelrp rotationalcharacterizationofhayabusaiitargetasteroid1621731999ju3
AT abellpa rotationalcharacterizationofhayabusaiitargetasteroid1621731999ju3
_version_ 1782030176340672512

Ejemplares similares