Astronomy:Yamato 791197
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Short description: First known lunar meteorite found on Earth
| Yamato 791197 | |
|---|---|
| Type | Achondrite |
| Class | Lunar meteorite |
| Group | Anorthositic[1] |
| Parent body | Moon |
| Country | Antarctica |
| Coordinates | [ ⚑ ] : 71°30′S 35°40′E / 71.5°S 35.667°E[1] |
| Observed fall | No |
| Fall date | 0.03–0.09 Myr[2] |
| Found date | November 20, 1979 |
| TKW | 52.4 g |
Yamato 791197, official abbreviation Y-791197, is a meteorite that was found in Antarctica on November 20, 1979.[3]
It is the first lunar meteorite to be found on Earth, but was not identified as such until 1984, after the lunar origin of ALH 81005 was recognised.[4] It was collected by the National Institute of Polar Research, Japan.[1]
Classification and characteristics
Weighing 52.4 grams, it is a weakly shocked feldspathic regolith breccia believed to have come from the lunar highlands on the far side of the Moon.[1][5]
It is classified as lunar-anorthositic breccia, a lunar meteorite that is primarily anorthositic.[1]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Meteoritical Bulletin Database: Yamato 791197
- ↑ Cassidy, William A. (2003). Meteorites, Ice, and Antarctica. Cambridge University Press. p. 186.
- ↑ Korotev, Randy L.. "Lunar Meteorite: Yamato 791197". Washington University in St. Louis, Department of Earth and Planetary Sciences. https://sites.wustl.edu/meteoritesite/items/lunar-meteorites/.
- ↑ "Lunar Meteorite: Yamato 791197 | Some Meteorite Information | Washington University in St. Louis". https://sites.wustl.edu/meteoritesite/items/lm_yamato_791197/.
- ↑ Ostertag, R. (1985). "Lunar meteorite Yamato 791197: a weakly shocked regolith breccia from the far side of the Moon". Lunar and Planetary Science XVI/3: 635–636. Bibcode: 1985LPI....16..635O.
External links
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