Near-Earth asteroid surface roughness depends on compositional class

Lance A.M. Benner; Steven J. Ostro; Christopher Magri; Michael C. Nolan; Ellen S. Howell; Jon D. Giorgini; Raymond F. Jurgens; Jean Luc Margot; Patrick A. Taylor; Michael W. Busch; Michael K. Shepard

doi:10.1016/j.icarus.2008.06.010

Near-Earth asteroid surface roughness depends on compositional class

Lance A.M. Benner, Steven J. Ostro, Christopher Magri, Michael C. Nolan, Ellen S. Howell, Jon D. Giorgini, Raymond F. Jurgens, Jean Luc Margot, Patrick A. Taylor, Michael W. Busch, Michael K. Shepard

Research output: Contribution to journal › Article › peer-review

112 Scopus citations

Abstract

Radar observations of 214 near-Earth asteroids (NEAs) reveal a very strong correlation of circular polarization ratio with visible-infrared taxonomic class, establishing distinct differences in the centimeter-to-several-decimeter structural complexity of objects in different spectral classes. The correlation may be due to the intrinsic mechanical properties of different mineralogical assemblages but also may reflect very different formation ages and collisional histories. The highest ratios are measured for groups associated with achondritic igneous rocky meteorites: the E class, whose parent body may be 3103 Eger, and the V class, derived from the mainbelt asteroid (and Dawn mission target) 4 Vesta.

Original language	English (US)
Pages (from-to)	294-304
Number of pages	11
Journal	Icarus
Volume	198
Issue number	2
DOIs	https://doi.org/10.1016/j.icarus.2008.06.010
State	Published - Dec 2008
Externally published	Yes

Keywords

Asteroids
Near-Earth objects
Radar observations
composition
surfaces

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1016/j.icarus.2008.06.010

Cite this

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title = "Near-Earth asteroid surface roughness depends on compositional class",

abstract = "Radar observations of 214 near-Earth asteroids (NEAs) reveal a very strong correlation of circular polarization ratio with visible-infrared taxonomic class, establishing distinct differences in the centimeter-to-several-decimeter structural complexity of objects in different spectral classes. The correlation may be due to the intrinsic mechanical properties of different mineralogical assemblages but also may reflect very different formation ages and collisional histories. The highest ratios are measured for groups associated with achondritic igneous rocky meteorites: the E class, whose parent body may be 3103 Eger, and the V class, derived from the mainbelt asteroid (and Dawn mission target) 4 Vesta.",

keywords = "Asteroids, Near-Earth objects, Radar observations, composition, surfaces",

author = "Benner, {Lance A.M.} and Ostro, {Steven J.} and Christopher Magri and Nolan, {Michael C.} and Howell, {Ellen S.} and Giorgini, {Jon D.} and Jurgens, {Raymond F.} and Margot, {Jean Luc} and Taylor, {Patrick A.} and Busch, {Michael W.} and Shepard, {Michael K.}",

year = "2008",

month = dec,

doi = "10.1016/j.icarus.2008.06.010",

language = "English (US)",

volume = "198",

pages = "294--304",

journal = "Icarus",

issn = "0019-1035",

publisher = "Academic Press Inc.",

number = "2",

}

TY - JOUR

T1 - Near-Earth asteroid surface roughness depends on compositional class

AU - Benner, Lance A.M.

AU - Ostro, Steven J.

AU - Magri, Christopher

AU - Nolan, Michael C.

AU - Howell, Ellen S.

AU - Giorgini, Jon D.

AU - Jurgens, Raymond F.

AU - Margot, Jean Luc

AU - Taylor, Patrick A.

AU - Busch, Michael W.

AU - Shepard, Michael K.

PY - 2008/12

Y1 - 2008/12

N2 - Radar observations of 214 near-Earth asteroids (NEAs) reveal a very strong correlation of circular polarization ratio with visible-infrared taxonomic class, establishing distinct differences in the centimeter-to-several-decimeter structural complexity of objects in different spectral classes. The correlation may be due to the intrinsic mechanical properties of different mineralogical assemblages but also may reflect very different formation ages and collisional histories. The highest ratios are measured for groups associated with achondritic igneous rocky meteorites: the E class, whose parent body may be 3103 Eger, and the V class, derived from the mainbelt asteroid (and Dawn mission target) 4 Vesta.

AB - Radar observations of 214 near-Earth asteroids (NEAs) reveal a very strong correlation of circular polarization ratio with visible-infrared taxonomic class, establishing distinct differences in the centimeter-to-several-decimeter structural complexity of objects in different spectral classes. The correlation may be due to the intrinsic mechanical properties of different mineralogical assemblages but also may reflect very different formation ages and collisional histories. The highest ratios are measured for groups associated with achondritic igneous rocky meteorites: the E class, whose parent body may be 3103 Eger, and the V class, derived from the mainbelt asteroid (and Dawn mission target) 4 Vesta.

KW - Asteroids

KW - Near-Earth objects

KW - Radar observations

KW - composition

KW - surfaces

UR - http://www.scopus.com/inward/record.url?scp=55949115797&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=55949115797&partnerID=8YFLogxK

U2 - 10.1016/j.icarus.2008.06.010

DO - 10.1016/j.icarus.2008.06.010

M3 - Article

AN - SCOPUS:55949115797

SN - 0019-1035

VL - 198

SP - 294

EP - 304

JO - Icarus

JF - Icarus

IS - 2

ER -

Near-Earth asteroid surface roughness depends on compositional class

Abstract

Keywords

ASJC Scopus subject areas

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