(18399) Tentoumushi Main-belt Asteroid
Discovered on 17 November 1992 by Endate, K., Watanabe, K. at Kitami.
The Tentoumushi astronomy club was named after the seven-starred ladybug. The club received an award from the city of Komatsu for its astronomy popularization.Naming citation (MPC batch dated 2017-01-12), IAU / Minor Planet Center, via NASA/JPL
Where Tentoumushi is today
Seen from above the solar system on 2026-10-14: Tentoumushi is 2.58 au from the Sun and 2.23 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18399 |
| Provisional designation | 1992 WK1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 23.0 km (#1,858 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0480 |
| Absolute magnitude (H) | 12.41 |
| Orbital period | 5.60 years |
| Semi-major axis | 3.15 au |
| Perihelion – aphelion | 2.51 – 3.79 au |
| Eccentricity | 0.203 |
| Inclination | 18.3° |
| Closest distance between its orbit and Earth's (MOID) | 1.54 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.