- Open Access
Closing in on HED meteorite sources
Earth, Planets and Space volume 53, pages1077–1083(2001)
Members of the Vesta dynamical family have orbital elements consistent with ejecta from a single large excavating collision from a single hemisphere of Vesta. The portion of Vesta’s orbit at which such an event must have occurred is slightly constrained and depends on the hemisphere impacted. There is some evidence for subsequent disruptions of these ejected objects. Spectroscopy suggests that the dynamical family members are associated with material from Vesta’s interior that was excavated by the event giving rise to the crater covering much of Vesta’s southern hemisphere. The 505-nm pyroxene feature seen in HED meteorites is relatively absent in a sample of Vesta dynamical family members raising the question of whether this collisional event was the source of the HED meteorites. Asteroids spectroscopically associated with Vesta that possess this feature are dynamically distinct and could have arisen from a different collisional event on Vesta or originated from a body geochemically similar to Vesta that was disrupted early in the history of the solar system.
Asphaug, E., Impact origin of the Vesta family, Meteor. and Planet. Sci., 32, 965–980, 1997.
Bell, J. F., The Vesta family: What went wrong, Bull. Am. Astr. Soc., 30, 504, 1998.
Binzel, R. P., Editorial: Forging the fourth link between planetary worlds: Vesta and the HEDs, Meteor. and Planet. Sci., 36, 479–480, 2001.
Binzel, R. P. and S. Xu, Chips off of asteroid 4 Vesta: Evidence for the parent body of basaltic achondrite meteorites, Science, 260, 186–191, 1993.
Burbine, T. H. and R. P. Binzel, SMASSIR measurements of Vesta chips: Evidence for weathering?, Bull. Am. Astr. Soc., 29, 964, 1997.
Bus, S. J., Compositional Structure in the Asteroid Belt: Results of a Spectroscopic Survey, Ph.D. Thesis, MIT, 1999.
Cochran, A. L. and F. Vilas, The changing spectrum of Vesta: Rotationally resolved spectroscopy of pyroxene on the surface, Icarus, 127, 121–129, 1998.
Consolmagno, G. J. and M. J. Drake, Composition and evolution of the eucrite parent body: Evidence from rare earth elements, Geochim. Cosmochim. Acta, 41, 1271–1282, 1977.
Drake, M., Geochemical evolution of the eucrite parent body—Possible nature and evolution of asteroid 4 Vesta, in Asteroids, edited by T. Gehrels, pp. 765–782, Univ. Arizona Press, Tucson, 1979.
Fujiwara, A., P. Cerroni, D. Davis, E. Ryan, M. Di Martino, K. Holsapple, and K. Housen, Experiments and scaling laws for catastrophic collisions, in Asteroids II, edited by R. Binzel, T. Gehrels, and M. Matthews, pp. 240–265, Univ. Arizona Press, Tucson, 1989.
Gaffey, M. J., Spectral reflectance properties of the meteorite classes, J. Geophys. Res., 81, 905–920, 1976.
Gaffey, M. J., Surface lithologic heterogeneity of Asteroid 4 Vesta, Icarus, 127, 130–157, 1997.
Gaffey, M. J. and T. B. McCord, Asteroid surface materials: Minerological characterizations from reflectance spectra, Space Sci. Rev., 21, 555–628, 1978.
Hilton, J. L., New masses and densities for 1 Ceres, 2 Pallas, and 4 Vesta, Bull. Am. Astr. Soc., 29, 1318, 1997.
Hirayama, K., Groups of asteroids probably of common origin, Astron. J., 31, 185–188, 1918.
Hiroi, T., C. M. Pieters, and H. Takeda, Grain size of the surface regolith of asteroid 4 Vesta estimated from its reflectance spectrum in comparison with HED meteorites, Meteoritics, 29, 394–396, 1994.
Jarvis, K. S., F. Vilas, A. L. Cochran, and M. S. Kelley, New visible-region spectral observations of Vesta and five Vestoids, LPSC XXXII, 2141, 2001.
Knezević, Z. and A. Milani, Synthetic proper elements for outer main belt asteroids, Celest. Mech. and Dyn. Astron., 78, 17–46, 2000.
Lazzaro, D., T. Michtchenko, J. M. Carvano, R. P. Binzel, S. J. Bus, T. H. Burbine, T. Mothe-Dinz, M. Florczak, C. A. Angeli, and A. W. Harris, Discovery of a basaltic asteroid in the outer main belt, Science, 288, 2033–2035, 2000.
Marzari, F., D. Davis, and V. Vanzani, Collisional evolution of asteroid families, Icarus, 113, 168–187, 1995.
Marzari, F., A. Cellino, D. R. Davis, P. Farinella, V. Zappala, and V. Vanzani, Origin and evolution of the Vesta asteroid family, Astron. Astrophys., 316, 248–262, 1996.
McSween, H. A., Meteorites, in The New Solar System, edited by K. Beatty, C. Petersen, and A. Chaikin, pp. 351–364, Sky Publishing Corp., 1999.
Ryan, E. V. and H. J. Melosh, Impact fragmentation: From the laboratory to asteroids, Icarus, 133, 1–24, 1998.
Thomas, P. C., R. P. Binzel, M. J. Gaffey, B. H. Zellner, A. D. Storrs, and E. Wells, Vesta: Spin pole, size, and shape from HST images, Icarus, 128, 88–94, 1997.
Vilas, F., A. L. Cochran, and K. S. Jarvis, Vesta and the Vestoids: A new rock group?, Icarus, 147, 119–128, 2000.
Wisdom, J., Chaotic dynamics in the solar system, Icarus, 72, 241–275, 1987.
Wetherill, G. W., Where do the Apollo objects come from?, Icarus, 76, 1–18, 1988.
Yamamoto, S. and A. Nakamura, Velocity measurements of impact eject from regolith targets, Icarus, 128, 160–170, 1998.
Zappala, V., Ph. Bendjoya, A. Cellino, P. Farinella, and C. Froeschle, Asteroid families: Search of a 12,487-asteroid sample using two different clustering techniques, Icarus, 116, 291–314, 1995.
About this article
Cite this article
Sykes, M.V., Vilas, F. Closing in on HED meteorite sources. Earth Planet Sp 53, 1077–1083 (2001). https://doi.org/10.1186/BF03351706
- Orbital Element
- Dynamical Family
- Impact Crater
- Parent Body
- Escape Velocity