(20385) Horiuchi Main-belt Asteroid

Discovered on 23 May 1998 by LINEAR at Socorro.

Shinji Horiuchi (b. 1964) is a Japanese–Australian radio astronomer affiliated with NASA’s Canberra DSN Complex and CSIRO Astronomy & Space Science. He is the lead scientist for the Southern Hemisphere Asteroid Radar Program, and has led bistatic radar efforts from the southern hemisphere, leveraging VLBI and radio-astronomy expertise.Naming citation (WGSBN Bull. 6, #11, 16), IAU / Minor Planet Center, via NASA/JPL

Where Horiuchi is today

Seen from above the solar system on 2026-10-14: Horiuchi is 2.41 au from the Sun and 2.33 au from Earth. Computed from JPL's orbital elements.

Facts

Number	20385
Provisional designation	1998 KS53
Orbit class	Main-belt Asteroid
Diameter	6.12 km (#8,758 largest of 17,440 named asteroids with a measured size)
Albedo	0.143
Rotation period	4.04 hours
Absolute magnitude (H)	14.0
Orbital period	4.63 years
Semi-major axis	2.78 au
Perihelion – aphelion	2.41 – 3.15 au
Eccentricity	0.134
Inclination	9.89°
Closest distance between its orbit and Earth's (MOID)	1.39 au

Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.

Also named after someone called Shinji

All asteroids named after someone called Shinji

Also discovered on 23 May 1998

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