Yamato 791197 | |
---|---|
Type | Achondrite |
Class | Lunar meteorite |
Group | Anorthositic[1] |
Parent body | Moon |
Country | Antarctica |
Coordinates | 71°30′S 35°40′E / 71.500°S 35.667°E / -71.500; 35.667[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]
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]