Asteroid (21) Lutetia as a remnant of Earth's precursor planetesimals

P. Vernazza, P. Lamy, O. Groussin, T. Hiroi, L. Jorda, P. L. King, Matthew Richar Izawa, F. Marchis, M. Birlan, R. Brunetto

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Isotopic and chemical compositions of meteorites, coupled with dynamical simulations, suggest that the main belt of asteroids between Mars and Jupiter contains objects formed in situ as well as a population of interlopers. These interlopers are predicted to include the building blocks of the terrestrial planets as well as objects that formed beyond Neptune (Bottke et al. 2006, Levison et al. 2009, Walsh et al. 2011). Here we report that the main belt asteroid (21) Lutetia - encountered by the Rosetta spacecraft in July 2010 - has spectral (from 0.3 to 25 μm) and physical (albedo, density) properties quantitatively similar to the class of meteorites known as enstatite chondrites. The chemical and isotopic compositions of these chondrites indicate that they were an important component of the formation of Earth and other terrestrial planets. This meteoritic association implies that Lutetia is a member of a small population of planetesimals that formed in the terrestrial planet region and that has been scattered in the main belt by emerging protoplanets (Bottke et al. 2006) and/or by the migration of Jupiter (Walsh et al. 2011) early in its history. Lutetia, along with a few other main-belt asteroids, may contains part of the long-sought precursor material (or closely related materials) from which the terrestrial planets accreted.

Original languageEnglish
Pages (from-to)650-659
Number of pages10
JournalIcarus
Volume216
Issue number2
DOIs
Publication statusPublished - Dec 2011
Externally publishedYes

Fingerprint

terrestrial planets
protoplanets
planetesimal
asteroids
asteroid
planet
asteroid belts
chondrites
meteorites
Jupiter (planet)
Jupiter
meteorite
chemical composition
isotopic composition
enstatite chondrite
enstatite
Neptune (planet)
Neptune
albedo
chondrite

Keywords

  • Asteroids, Composition
  • Asteroids, Surfaces
  • Origin, Solar System

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Vernazza, P., Lamy, P., Groussin, O., Hiroi, T., Jorda, L., King, P. L., ... Brunetto, R. (2011). Asteroid (21) Lutetia as a remnant of Earth's precursor planetesimals. Icarus, 216(2), 650-659. https://doi.org/10.1016/j.icarus.2011.09.032

Asteroid (21) Lutetia as a remnant of Earth's precursor planetesimals. / Vernazza, P.; Lamy, P.; Groussin, O.; Hiroi, T.; Jorda, L.; King, P. L.; Richar Izawa, Matthew; Marchis, F.; Birlan, M.; Brunetto, R.

In: Icarus, Vol. 216, No. 2, 12.2011, p. 650-659.

Research output: Contribution to journalArticle

Vernazza, P, Lamy, P, Groussin, O, Hiroi, T, Jorda, L, King, PL, Richar Izawa, M, Marchis, F, Birlan, M & Brunetto, R 2011, 'Asteroid (21) Lutetia as a remnant of Earth's precursor planetesimals', Icarus, vol. 216, no. 2, pp. 650-659. https://doi.org/10.1016/j.icarus.2011.09.032
Vernazza P, Lamy P, Groussin O, Hiroi T, Jorda L, King PL et al. Asteroid (21) Lutetia as a remnant of Earth's precursor planetesimals. Icarus. 2011 Dec;216(2):650-659. https://doi.org/10.1016/j.icarus.2011.09.032
Vernazza, P. ; Lamy, P. ; Groussin, O. ; Hiroi, T. ; Jorda, L. ; King, P. L. ; Richar Izawa, Matthew ; Marchis, F. ; Birlan, M. ; Brunetto, R. / Asteroid (21) Lutetia as a remnant of Earth's precursor planetesimals. In: Icarus. 2011 ; Vol. 216, No. 2. pp. 650-659.
@article{dfc4507413ea41e685d2b27d9203cf5b,
title = "Asteroid (21) Lutetia as a remnant of Earth's precursor planetesimals",
abstract = "Isotopic and chemical compositions of meteorites, coupled with dynamical simulations, suggest that the main belt of asteroids between Mars and Jupiter contains objects formed in situ as well as a population of interlopers. These interlopers are predicted to include the building blocks of the terrestrial planets as well as objects that formed beyond Neptune (Bottke et al. 2006, Levison et al. 2009, Walsh et al. 2011). Here we report that the main belt asteroid (21) Lutetia - encountered by the Rosetta spacecraft in July 2010 - has spectral (from 0.3 to 25 μm) and physical (albedo, density) properties quantitatively similar to the class of meteorites known as enstatite chondrites. The chemical and isotopic compositions of these chondrites indicate that they were an important component of the formation of Earth and other terrestrial planets. This meteoritic association implies that Lutetia is a member of a small population of planetesimals that formed in the terrestrial planet region and that has been scattered in the main belt by emerging protoplanets (Bottke et al. 2006) and/or by the migration of Jupiter (Walsh et al. 2011) early in its history. Lutetia, along with a few other main-belt asteroids, may contains part of the long-sought precursor material (or closely related materials) from which the terrestrial planets accreted.",
keywords = "Asteroids, Composition, Asteroids, Surfaces, Origin, Solar System",
author = "P. Vernazza and P. Lamy and O. Groussin and T. Hiroi and L. Jorda and King, {P. L.} and {Richar Izawa}, Matthew and F. Marchis and M. Birlan and R. Brunetto",
year = "2011",
month = "12",
doi = "10.1016/j.icarus.2011.09.032",
language = "English",
volume = "216",
pages = "650--659",
journal = "Icarus",
issn = "0019-1035",
publisher = "Academic Press Inc.",
number = "2",

}

TY - JOUR

T1 - Asteroid (21) Lutetia as a remnant of Earth's precursor planetesimals

AU - Vernazza, P.

AU - Lamy, P.

AU - Groussin, O.

AU - Hiroi, T.

AU - Jorda, L.

AU - King, P. L.

AU - Richar Izawa, Matthew

AU - Marchis, F.

AU - Birlan, M.

AU - Brunetto, R.

PY - 2011/12

Y1 - 2011/12

N2 - Isotopic and chemical compositions of meteorites, coupled with dynamical simulations, suggest that the main belt of asteroids between Mars and Jupiter contains objects formed in situ as well as a population of interlopers. These interlopers are predicted to include the building blocks of the terrestrial planets as well as objects that formed beyond Neptune (Bottke et al. 2006, Levison et al. 2009, Walsh et al. 2011). Here we report that the main belt asteroid (21) Lutetia - encountered by the Rosetta spacecraft in July 2010 - has spectral (from 0.3 to 25 μm) and physical (albedo, density) properties quantitatively similar to the class of meteorites known as enstatite chondrites. The chemical and isotopic compositions of these chondrites indicate that they were an important component of the formation of Earth and other terrestrial planets. This meteoritic association implies that Lutetia is a member of a small population of planetesimals that formed in the terrestrial planet region and that has been scattered in the main belt by emerging protoplanets (Bottke et al. 2006) and/or by the migration of Jupiter (Walsh et al. 2011) early in its history. Lutetia, along with a few other main-belt asteroids, may contains part of the long-sought precursor material (or closely related materials) from which the terrestrial planets accreted.

AB - Isotopic and chemical compositions of meteorites, coupled with dynamical simulations, suggest that the main belt of asteroids between Mars and Jupiter contains objects formed in situ as well as a population of interlopers. These interlopers are predicted to include the building blocks of the terrestrial planets as well as objects that formed beyond Neptune (Bottke et al. 2006, Levison et al. 2009, Walsh et al. 2011). Here we report that the main belt asteroid (21) Lutetia - encountered by the Rosetta spacecraft in July 2010 - has spectral (from 0.3 to 25 μm) and physical (albedo, density) properties quantitatively similar to the class of meteorites known as enstatite chondrites. The chemical and isotopic compositions of these chondrites indicate that they were an important component of the formation of Earth and other terrestrial planets. This meteoritic association implies that Lutetia is a member of a small population of planetesimals that formed in the terrestrial planet region and that has been scattered in the main belt by emerging protoplanets (Bottke et al. 2006) and/or by the migration of Jupiter (Walsh et al. 2011) early in its history. Lutetia, along with a few other main-belt asteroids, may contains part of the long-sought precursor material (or closely related materials) from which the terrestrial planets accreted.

KW - Asteroids, Composition

KW - Asteroids, Surfaces

KW - Origin, Solar System

UR - http://www.scopus.com/inward/record.url?scp=80755125874&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80755125874&partnerID=8YFLogxK

U2 - 10.1016/j.icarus.2011.09.032

DO - 10.1016/j.icarus.2011.09.032

M3 - Article

AN - SCOPUS:80755125874

VL - 216

SP - 650

EP - 659

JO - Icarus

JF - Icarus

SN - 0019-1035

IS - 2

ER -