(4156) Okadanoboru Main-belt Asteroid

Discovered on 16 January 1988 by T. Kojima at Chiyoda.

Noboru Okada (1953-2002?) was a Japanese adventurer, photographer, moun-tain-climber and amateur astronomer who installed a 0.5-m telescope at the Yatsugatake mountain base. In Jan. 2002 he disappeared while climbing alone in the Japan North Alps.Naming citation (20060219/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Okadanoboru is today

Seen from above the solar system on 2026-10-14: Okadanoboru is 2.56 au from the Sun and 1.75 au from Earth. Computed from JPL's orbital elements.

Facts

Number	4156
Provisional designation	1988 BE
Orbit class	Main-belt Asteroid
Diameter	15.5 km (#3,022 largest of 17,440 named asteroids with a measured size)
Albedo	0.0910
Rotation period	12.0 hours
Spectral type	Cgh
Absolute magnitude (H)	12.44
Orbital period	4.44 years
Semi-major axis	2.70 au
Perihelion – aphelion	2.19 – 3.21 au
Eccentricity	0.189
Inclination	14.2°
Closest distance between its orbit and Earth's (MOID)	1.23 au

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

Also named after someone called Noboru

(8693) Matsuki

All asteroids named after someone called Noboru

Also discovered on 16 January 1988

More named asteroids discovered by T. Kojima

All 26

← (4155) Watanabe · (4157) Izu →