An Anomalous Basaltic Meteorite from the Innermost Main Belt

Author:

Bland Philip A.1,Spurný Pavel2,Towner Martin C.1,Bevan Alex W. R.3,Singleton Andrew T.4,Bottke William F.5,Greenwood Richard C.6,Chesley Steven R.7,Shrbený Lukas12,Borovička Jiri2,Ceplecha Zdenek2,McClafferty Terence P.8,Vaughan David9,Benedix Gretchen K.10,Deacon Geoff3,Howard Kieren T.10,Franchi Ian A.6,Hough Robert M.11

Affiliation:

1. IARC, Department of Earth Science and Engineering, Imperial College London, London SW7 2AZ, UK.

2. Astronomical Institute of the Academy of Sciences, Fričova 298, CZ-251 65 Ondřejov Observatory, Czech Republic.

3. Department of Earth and Planetary Sciences, Western Australian Museum, Locked Bag 49 Welshpool DC, Western Australia 6986, Australia.

4. Space and Atmospheric Physics Group, Department of Physics, Imperial College London, London SW7 2AZ, UK.

5. Southwest Research Institute, 1050 Walnut Street, Suite 426, Boulder, CO 80302, USA.

6. PSSRI, Open University, Walton Hall, Milton Keynes MK7 6AA, UK.

7. Solar System Dynamics Group, Jet Propulsion Laboratory, M/S 301-150, Pasadena, CA 91109, USA.

8. Office of Research and Development, Curtin University of Technology, GPO Box U1987, Perth, Western Australia 6845, Australia.

9. Post Office Box 187, Nedlands, Perth, Western Australia 6909, Australia.

10. IARC, Department of Mineralogy, Natural History Museum, London SW7 5BD, UK.

11. CSIRO Exploration and Mining, CRCLEME, ARRC, 26 Dick Perry Avenue, Kensington, Perth, Western Australia 6151, Australia.

Abstract

The Meteorite Who Fell to Earth Orbital data is available for only a handful of meteorites. Some are found long after they fell to Earth. Others are recovered after they have been observed falling through the atmosphere, but their trajectories are rarely recorded. Bland et al. (p. 1525 ) used a photographic camera network located in the Australian desert to track a fireball in the sky, find the meteorite, and establish its orbit. The meteorite is a basaltic achondrite; most such rocks have been traced to the major asteroid Vesta. In this case, the meteorite's isotopic composition and orbital properties suggest a distinct parent asteroid—a different source of basaltic material residing in the innermost main belt.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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