(17128) Stephyoshida Main-belt Asteroid
Discovered on 10 May 1999 by LINEAR at Socorro.
Stephanie Naphat Yoshida (b. 2003) was awarded second place in the 2019 Intel International Science and Engineering Fair for her physics and astronomy project. She attended the Punahou School, Honolulu, Hawaii, U.S.A.Naming citation (WGSBN Bull. 3, #7, 12), IAU / Minor Planet Center, via NASA/JPL
Where Stephyoshida is today
Seen from above the solar system on 2026-10-14: Stephyoshida is 2.87 au from the Sun and 3.58 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 17128 |
| Provisional designation | 1999 JS75 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.55 km (#9,634 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.228 |
| Absolute magnitude (H) | 13.84 |
| Orbital period | 4.04 years |
| Semi-major axis | 2.54 au |
| Perihelion – aphelion | 2.18 – 2.90 au |
| Eccentricity | 0.141 |
| Inclination | 11.9° |
| Closest distance between its orbit and Earth's (MOID) | 1.19 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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