(20361) Romanishin Main-belt Asteroid
Discovered on 1 May 1998 by LONEOS at Anderson Mesa.
William Romanishin (b. 1952) is a professor of astronomy at the University of Oklahoma. An expert in imaging faint objects using CCD cameras, Romanishin has recently concentrated on observing Kuiper Belt Objects. With Stephen Tegler, he discovered the bimodal nature of centaur colors.Naming citation (20080718/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Romanishin is today
Seen from above the solar system on 2026-10-14: Romanishin is 3.06 au from the Sun and 3.03 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20361 |
| Provisional designation | 1998 JD3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.55 km (#13,821 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.321 |
| Absolute magnitude (H) | 14.24 |
| Orbital period | 4.31 years |
| Semi-major axis | 2.65 au |
| Perihelion – aphelion | 2.23 – 3.07 au |
| Eccentricity | 0.157 |
| Inclination | 14.3° |
| Closest distance between its orbit and Earth's (MOID) | 1.23 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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