Hachi-oji
Seen to fall in 1817 in Japan · 0.2 g recovered · H?
Hachi-oji is one of the smallest recoveries in NASA’s Meteorite Landings dataset (records to 2013): only three falls were logged with less. By recovered mass it ranks 24th of the 24 falls dated to the same decade. Sayama came down only 25 km to the north, in 1986.
- Group
- H chondrites
- Recorded position
- 35.650° N, 139.333° E
The map is centred on Hachi-oji. Rings every 50 km; numbers match the table below.
Nearest recorded falls
Within 250 km lie 14 other recorded falls.
| # | Fall | Year | Class | Recovered | Distance |
|---|---|---|---|---|---|
| 1 | Sayama | 1986 | CM2 | 430 g | 25 km north |
| 2 | Komagome | 1926 | Iron | 238 g | 39 km east |
| 3 | Okabe | 1958 | H5 | 194 g | 60 km north |
| 4 | Kamiomi | 1913 | H5 | 448 g | 71 km north-east |
| 5 | Tsukuba | 1996 | H5-6 | 800 g | 86 km north-east |
| 6 | Kijima (1906) | 1906 | Unclassified stone | 331 g | 158 km north-west |
What H? means
H? is the label for an ordinary chondrite with high total iron; no petrologic type is recorded. Hachi-oji is the only fall in the record classed H?.
Hachi-oji in Japan’s record
In date order Hachi-oji is number 5 of the 42 falls recorded in Japan, which run from 860 to 2003. The fall recorded before Hachi-oji in Japan is Ogi (1741); the next is Yonozu (1837).
The 1810s
No fall outside Japan is dated 1817 in the record.