(5685) Sanenobufukui Main-belt Asteroid

Discovered on 8 December 1990 by Nomura, T., Kawanishi, K. at Minami-Oda.

Named in honor of Sanenobu Fukui (b. 1916), a well-known observer of Mars for more than 60 years. He was a director of the Oriental Astronomical Association and one of the leaders of its Kobe branch.Naming citation (19990728/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Sanenobufukui is today

Seen from above the solar system on 2026-10-14: Sanenobufukui is 3.02 au from the Sun and 2.40 au from Earth. Computed from JPL's orbital elements.

Facts

Number	5685
Provisional designation	1990 XA
Orbit class	Main-belt Asteroid
Diameter	13.0 km (#3,725 largest of 17,440 named asteroids with a measured size)
Albedo	0.240
Rotation period	3.39 hours
Spectral type	S
Absolute magnitude (H)	11.74
Orbital period	4.69 years
Semi-major axis	2.80 au
Perihelion – aphelion	2.54 – 3.06 au
Eccentricity	0.0937
Inclination	7.70°
Closest distance between its orbit and Earth's (MOID)	1.55 au

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

Also discovered on 8 December 1990

More named asteroids discovered by Nomura, T., Kawanishi, K.

← (5684) Kogo · (5686) Chiyonoura →