Composition of the L5 Mars Trojans: Neighbors, not siblings

Andrew S. Rivkin, David E Trilling, Cristina A. Thomas, Francesca DeMeo, Timothy B. Spahr, Richard P. Binzel

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Mars is the only terrestrial planet known to have Trojan (co-orbiting) asteroids, with a confirmed population of at least 4 objects. The origin of these objects is not known; while several have orbits that are stable on Solar System timescales, work by Rivkin et al. [Rivkin, A.S., Binzel, R.P., Howell, E.S., Bus, S.J., Grier, J.A., 2003. Icarus 165, 349-354] showed they have compositions that suggest separate origins from one another. We have obtained infrared (0.8-2.5 μm) spectroscopy of the two largest L5 Mars Trojans, and confirm and extend the results of Rivkin et al. We suggest that the differentiated angrite meteorites are good spectral analogs for 5261 Eureka, the largest Mars Trojan. Meteorite analogs for 101429 1998 VF31 are more varied and include primitive achondrites and mesosiderites.

Original languageEnglish (US)
Pages (from-to)434-441
Number of pages8
JournalIcarus
Volume192
Issue number2
DOIs
StatePublished - Dec 15 2007
Externally publishedYes

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mars
Mars
meteorites
meteorite
mesosiderite
achondrites
analogs
achondrite
terrestrial planets
asteroids
solar system
asteroid
planet
spectroscopy
timescale
orbits
bus

Keywords

  • Asteroids
  • composition
  • Trojan asteroids

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Rivkin, A. S., Trilling, D. E., Thomas, C. A., DeMeo, F., Spahr, T. B., & Binzel, R. P. (2007). Composition of the L5 Mars Trojans: Neighbors, not siblings. Icarus, 192(2), 434-441. https://doi.org/10.1016/j.icarus.2007.06.026

Composition of the L5 Mars Trojans : Neighbors, not siblings. / Rivkin, Andrew S.; Trilling, David E; Thomas, Cristina A.; DeMeo, Francesca; Spahr, Timothy B.; Binzel, Richard P.

In: Icarus, Vol. 192, No. 2, 15.12.2007, p. 434-441.

Research output: Contribution to journalArticle

Rivkin, AS, Trilling, DE, Thomas, CA, DeMeo, F, Spahr, TB & Binzel, RP 2007, 'Composition of the L5 Mars Trojans: Neighbors, not siblings', Icarus, vol. 192, no. 2, pp. 434-441. https://doi.org/10.1016/j.icarus.2007.06.026
Rivkin AS, Trilling DE, Thomas CA, DeMeo F, Spahr TB, Binzel RP. Composition of the L5 Mars Trojans: Neighbors, not siblings. Icarus. 2007 Dec 15;192(2):434-441. https://doi.org/10.1016/j.icarus.2007.06.026
Rivkin, Andrew S. ; Trilling, David E ; Thomas, Cristina A. ; DeMeo, Francesca ; Spahr, Timothy B. ; Binzel, Richard P. / Composition of the L5 Mars Trojans : Neighbors, not siblings. In: Icarus. 2007 ; Vol. 192, No. 2. pp. 434-441.
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