(11720) Horodyskyj Main-belt Asteroid
Discovered on 21 April 1998 by LINEAR at Socorro.
Ulyana N. Horodyskyj (b. 1986) is a finalist in the 2002 Intel International Science and Engineering Fair for her earth and space sciences project. She attends the Padua Franciscan High School, North Royalton, Ohio, U.S.A.Naming citation (20020724/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Horodyskyj is today
Seen from above the solar system on 2026-10-14: Horodyskyj is 2.45 au from the Sun and 3.44 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11720 |
| Provisional designation | 1998 HZ99 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.21 km (#12,248 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.209 |
| Absolute magnitude (H) | 14.2 |
| Orbital period | 4.10 years |
| Semi-major axis | 2.56 au |
| Perihelion – aphelion | 2.43 – 2.69 au |
| Eccentricity | 0.0506 |
| Inclination | 5.45° |
| Closest distance between its orbit and Earth's (MOID) | 1.43 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 21 April 1998
- (9244) Visnjan
- (11715) Harperclark
- (11716) Amahartman
- (11718) Hayward
- (11719) Hicklen
- (11721) Shawnlowe
- (11724) Ronaldhsu
- (11725) Victoriahsu
- (12091) Jesmalmquist
- (12092) Erinorourke
- (12093) Chrimatthews
- (12094) Mazumder