Albedos and diameters of three Mars Trojan asteroids

David E Trilling, Andrew S. Rivkin, John A. Stansberry, Timothy B. Spahr, Richard A. Crudo, John K. Davies

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We observed the Mars Trojan Asteroids (5261) Eureka and (101429) 1998 VF31 and the candidate Mars Trojan 2001 FR127 at 11.2 and 18.1 microns using Michelle on the Gemini North telescope. We derive diameters of 1.28, 0.78, and <0.52 km, respectively, with corresponding geometric visible albedos of 0.39, 0.32, and >0.14. The albedos for Eureka and 1998 VF31 are consistent with the taxonomic classes and compositions (S(I)/angritic and S(VII)/achondritic, respectively) and implied histories presented in a companion paper by Rivkin et al. Eureka's surface likely has a relatively high thermal inertia, implying a thin regolith that is consistent with predictions and the small size that we derive.

Original languageEnglish (US)
Pages (from-to)442-447
Number of pages6
JournalIcarus
Volume192
Issue number2
DOIs
StatePublished - Dec 15 2007
Externally publishedYes

Fingerprint

Trojan asteroids
albedo
asteroid
mars
Mars
regolith
inertia
histories
telescopes
history
prediction
predictions

Keywords

  • Infrared observations
  • Regoliths
  • Trojan asteroids

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Trilling, D. E., Rivkin, A. S., Stansberry, J. A., Spahr, T. B., Crudo, R. A., & Davies, J. K. (2007). Albedos and diameters of three Mars Trojan asteroids. Icarus, 192(2), 442-447. https://doi.org/10.1016/j.icarus.2007.08.002

Albedos and diameters of three Mars Trojan asteroids. / Trilling, David E; Rivkin, Andrew S.; Stansberry, John A.; Spahr, Timothy B.; Crudo, Richard A.; Davies, John K.

In: Icarus, Vol. 192, No. 2, 15.12.2007, p. 442-447.

Research output: Contribution to journalArticle

Trilling, DE, Rivkin, AS, Stansberry, JA, Spahr, TB, Crudo, RA & Davies, JK 2007, 'Albedos and diameters of three Mars Trojan asteroids', Icarus, vol. 192, no. 2, pp. 442-447. https://doi.org/10.1016/j.icarus.2007.08.002
Trilling DE, Rivkin AS, Stansberry JA, Spahr TB, Crudo RA, Davies JK. Albedos and diameters of three Mars Trojan asteroids. Icarus. 2007 Dec 15;192(2):442-447. https://doi.org/10.1016/j.icarus.2007.08.002
Trilling, David E ; Rivkin, Andrew S. ; Stansberry, John A. ; Spahr, Timothy B. ; Crudo, Richard A. ; Davies, John K. / Albedos and diameters of three Mars Trojan asteroids. In: Icarus. 2007 ; Vol. 192, No. 2. pp. 442-447.
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