(121336) Ziarnadhronom Main-belt Asteroid
Discovered on 6 October 1999 by Kornos, L., Toth, J. at Modra.
Žiar nad Hronom is a town in central Slovakia by the river Hron. The town was built in the 20th century, but has a rich history with the old name of Holy Cross. Astronomy has been represented by the astronomy club since 1973, and later an observatory and planetarium, one of the most modern in Slovakia, was established.Naming citation (WGSBN Bull. 3, #13, 17), IAU / Minor Planet Center, via NASA/JPL
Where Ziarnadhronom is today
Seen from above the solar system on 2026-10-14: Ziarnadhronom is 2.87 au from the Sun and 2.64 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 121336 |
| Provisional designation | 1999 TF6 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.30 km (#8,512 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0450 |
| Absolute magnitude (H) | 15.05 |
| Orbital period | 5.57 years |
| Semi-major axis | 3.14 au |
| Perihelion – aphelion | 2.65 – 3.63 au |
| Eccentricity | 0.157 |
| Inclination | 7.25° |
| Closest distance between its orbit and Earth's (MOID) | 1.65 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.