Compositional differences between meteorites and near-Earth asteroids

被引：0

作者：

P. Vernazza

R. P. Binzel

C. A. Thomas

F. E. DeMeo

S. J. Bus

A. S. Rivkin

A. T. Tokunaga

机构：

[1] European Space Agency,Research and Scientific Support Department

[2] Keplerlaan 1,Department of Earth

[3] 2201 AZ Noordwijk,undefined

[4] The Netherlands,undefined

[5] Atmospheric,undefined

[6] and Planetary Sciences,undefined

[7] Massachusetts Institute of Technology,undefined

[8] Cambridge,undefined

[9] Massachusetts 02139,undefined

[10] USA,undefined

[11] Laboratoire d’Etudes Spatiales et d’Instrumentation en Astrophysique,undefined

[12] Observatoire de Paris,undefined

[13] 5 Place Jules Janssen,undefined

[14] Meudon,undefined

[15] F-92195,undefined

[16] France ,undefined

[17] Institute for Astronomy,undefined

[18] University of Hawaii,undefined

[19] 640 North A’ohoku Place,undefined

[20] Hilo,undefined

[21] Hawaii 96720,undefined

[22] USA ,undefined

[23] Johns Hopkins University Applied Physics Laboratory,undefined

[24] 11100 Johns Hopkins Road,undefined

[25] Laurel,undefined

[26] Maryland 20723,undefined

[27] USA ,undefined

[28] Institute for Astronomy,undefined

[29] University of Hawaii,undefined

[30] 2680 Woodlawn Drive,undefined

[31] Honolulu,undefined

[32] Hawaii 96822,undefined

[33] USA ,undefined

来源：

Nature | 2008年 / 454卷

关键词：

D O I：

暂无

中图分类号：

学科分类号：

摘要：

New spectral measurements of near-Earth asteroids reveal, as might be expected, overall compositions similar to the most commonly falling meteorites, the ordinary chondrites. But the compositional distribution is un-expected: about two-thirds of near-Earth asteroids, including those most likely to hit us, match the class of meteorites known as LL chondrites, which comprise only about 8% of all meteorite falls. This may reflect an origin at the asteroid belt's inner edge, where the family of asteroids produced by the break-up of the Flora parent body predominates. A possible explanation might lie in the involvement of size-dependent processes in the transport of material from the main asteroid belt to the vicinity of Earth's orbit.

引用

页码：858 / 860

页数：2

共 50 条

[1] Compositional differences between meteorites and near-Earth asteroids
Vernazza, P.
Binzel, R. P.
Thomas, C. A.
DeMeo, F. E.
Bus, S. J.
Rivkin, A. S.
Tokunaga, A. T.
NATURE, 2008, 454 (7206) : 858 - 860
[2] Compositional properties of near-earth asteroids: spectroscopic comparison with ordinary chondrite meteorites
Lazzarin, M
DiMartino, M
Barucci, MA
Doressoundiram, A
Florczak, M
ASTRONOMY & ASTROPHYSICS, 1997, 327 (01) : 388 - 391
[3] Identifying parent bodies of meteorites among near-Earth asteroids
Carbognani, A.
Fenucci, M.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2023, 525 (02) : 1705 - 1725
[4] ACCESSIBILITY OF NEAR-EARTH ASTEROIDS
LAU, CO
HULKOWER, ND
JOURNAL OF GUIDANCE CONTROL AND DYNAMICS, 1987, 10 (03) : 225 - 232
[5] Spectral properties of near-Earth asteroids: Evidence for sources of ordinary chondrite meteorites
Binzel, RP
Bus, SJ
Burbine, TH
Sunshine, JM
SCIENCE, 1996, 273 (5277) : 946 - 948
[6] The population of near-Earth asteroids
Harris, Alan W.
D'Abramo, Germano
ICARUS, 2015, 257 : 302 - 312
[7] Investigating near-Earth asteroids
Harris, A
Davies, J
ASTRONOMY & GEOPHYSICS, 1999, 40 (01) : 10 - 13
[8] The recovery of near-Earth asteroids
Boattini, A
Forti, G
PLANETARY AND SPACE SCIENCE, 2000, 48 (10) : 939 - 944
[9] Spectroscopy of near-Earth asteroids
Michelsen, R
Nathues, A
Lagerkvist, CI
ASTRONOMY & ASTROPHYSICS, 2006, 451 (01): : 331 - 337
[10] RADIOMETRY OF NEAR-EARTH ASTEROIDS
VEEDER, GJ
HANNER, MS
MATSON, DL
TEDESCO, EF
LEBOFSKY, LA
TOKUNAGA, AT
ASTRONOMICAL JOURNAL, 1989, 97 (04): : 1211 - 1219

← 1 2 3 4 5 →