(15224) Penttila Main-belt Asteroid
Discovered on 15 May 1985 by E. Bowell at Anderson Mesa.
Antti Penttilä (b. 1977) is a postdoctoral researcher at the University of Helsinki. He is a specialist on the scattering and absorption of light by cosmic dust in cometary comae as well as on the surfaces of asteroids and cometary nuclei.Naming citation (MPC batch dated 2014-07-12), IAU / Minor Planet Center, via NASA/JPL
Where Penttila is today
Seen from above the solar system on 2026-10-14: Penttila is 1.84 au from the Sun and 2.59 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 15224 |
| Provisional designation | 1985 JG |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.92 km (#6,660 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0850 |
| Rotation period | 4.38 hours |
| Absolute magnitude (H) | 14.13 |
| Orbital period | 3.76 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 1.83 – 3.00 au |
| Eccentricity | 0.242 |
| Inclination | 12.3° |
| Closest distance between its orbit and Earth's (MOID) | 0.818 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.