(9255) Inoutadataka Main-belt Asteroid
Discovered on 26 March 1971 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Named in memory of Inou Tadataka (1745-1818), a very able geographer and surveyor. He began to study astronomy and surveying methods after he retired from his official job at the age of 50. He began surveying in Hokkaido at his own expense. Since the map he made was found to be excellent, the Tokugawa government asked him to continue the survey on Honshu. He completed his survey of the Japanese coastal area by measuring astronomical latitudes at 1200 places, and he derived the length of the meridional arc of one degree to be 110.8 km. His map, smuggled to Europe on a Dutch ship, won wide respect there.Naming citation (19990402/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Inoutadataka is today
Seen from above the solar system on 2026-10-14: Inoutadataka is 2.43 au from the Sun and 3.42 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9255 |
| Provisional designation | 3174 T-1 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.03 |
| Orbital period | 3.69 years |
| Semi-major axis | 2.39 au |
| Perihelion – aphelion | 2.21 – 2.56 au |
| Eccentricity | 0.0725 |
| Inclination | 9.61° |
| Closest distance between its orbit and Earth's (MOID) | 1.21 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 26 March 1971
- (5195) Kaendler
- (5491) Kaulbach
- (5492) Thoma
- (5698) Nolde
- (6202) Georgemiley
- (6257) Thorvaldsen
- (6351) Neumann
- (6429) Brancusi
- (6674) Cezanne
- (6752) Ashley
- (7367) Giotto
- (7908) Zwingli