(7421) Kusaka Main-belt Asteroid

Discovered on 30 April 1992 by Kushida, Y., Muramatsu, O. at Yatsugatake.

Hideaki Kusaka (1924-1991) was an amateur astronomer who wrote several books on mythology related to constellations and calendars. He worked for a publisher and for the Gotoh Planetarium and Astronomical Museum in Tokyo before appearing frequently on science programs on radio and television.Naming citation (20020526/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Kusaka is today

Seen from above the solar system on 2026-10-14: Kusaka is 2.34 au from the Sun and 2.02 au from Earth. Computed from JPL's orbital elements.

Facts

Number	7421
Provisional designation	1992 HL
Orbit class	Main-belt Asteroid
Diameter	5.74 km (#9,317 largest of 17,440 named asteroids with a measured size)
Albedo	0.257
Rotation period	96.5 hours
Absolute magnitude (H)	13.72
Orbital period	4.20 years
Semi-major axis	2.60 au
Perihelion – aphelion	2.06 – 3.14 au
Eccentricity	0.207
Inclination	16.8°
Closest distance between its orbit and Earth's (MOID)	1.11 au

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

Also named after someone called Hideaki

All asteroids named after someone called Hideaki

Also discovered on 30 April 1992

More named asteroids discovered by Kushida, Y., Muramatsu, O.

All 36

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