(7898) Ohkuma Main-belt Asteroid

Discovered on 15 December 1995 by T. Kobayashi at Oizumi.

Masami Ohkuma (b. 1954) is an amateur astronomer who serves as chief editor of the Japanese astronomical monthly magazine Hoshi-Navi. He also plays an important role for the popularization of astronomy in Japan.Naming citation (20020427/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Ohkuma is today

Seen from above the solar system on 2026-10-14: Ohkuma is 2.52 au from the Sun and 3.52 au from Earth. Computed from JPL's orbital elements.

Facts

Number	7898
Provisional designation	1995 XR1
Orbit class	Main-belt Asteroid
Diameter	3.77 km (#13,301 largest of 17,440 named asteroids with a measured size)
Albedo	0.452
Rotation period	131 hours
Absolute magnitude (H)	13.93
Orbital period	3.28 years
Semi-major axis	2.21 au
Perihelion – aphelion	1.72 – 2.69 au
Eccentricity	0.219
Inclination	7.06°
Closest distance between its orbit and Earth's (MOID)	0.729 au

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

Also named after someone called Masami

All asteroids named after someone called Masami

Also discovered on 15 December 1995

More named asteroids discovered by T. Kobayashi

All 288

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