(12440) Koshigayaboshi Main-belt Asteroid
Discovered on 11 February 1996 by Endate, K., Watanabe, K. at Kitami.
Koshigayaboshi, “the star of Koshigaya”, is a city in the southeast region of Saitama prefecture, 25 km from Tokyo. During the Edo Period Koshigaya was the third lodge town from Nihonbashi to Nikko. The name was suggested by the people of Koshigaya in honor of the city's fiftieth anniversary in 2008.Naming citation (20081212/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Koshigayaboshi is today
Seen from above the solar system on 2026-10-14: Koshigayaboshi is 3.17 au from the Sun and 2.43 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12440 |
| Provisional designation | 1996 CF3 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 12.4 |
| Orbital period | 5.36 years |
| Semi-major axis | 3.06 au |
| Perihelion – aphelion | 2.94 – 3.19 au |
| Eccentricity | 0.0405 |
| Inclination | 12.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.93 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.