(5775) Inuyama Main-belt Asteroid

Discovered on 29 September 1989 by Mizuno, Y., Furuta, T. at Kani.

Named for a city in the northern part of Aichi Prefecture. Rich in natural beauty and featuring the Hida-Kiso River National Park, Inyuama is also known for its traditional events, such as the Nihon-Rhine Rapid Ride and Inuyama cormorant fishing. It also boasts some historically valuable architecture, including Japan's oldest donjon (in the Inuyama Castle) and the Tea Arbor JO-AN. Both are national treasures. Name proposed by the discoverers following a suggestion by their teacher, T. Yamada.Naming citation (19981208/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Inuyama is today

Seen from above the solar system on 2026-10-14: Inuyama is 2.12 au from the Sun and 1.20 au from Earth. Computed from JPL's orbital elements.

Facts

Number	5775
Provisional designation	1989 SP
Orbit class	Main-belt Asteroid
Diameter	7.38 km (#7,220 largest of 17,440 named asteroids with a measured size)
Albedo	0.337
Rotation period	4.83 hours
Absolute magnitude (H)	12.87
Orbital period	4.12 years
Semi-major axis	2.57 au
Perihelion – aphelion	2.09 – 3.05 au
Eccentricity	0.187
Inclination	11.3°
Closest distance between its orbit and Earth's (MOID)	1.10 au

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

Also discovered on 29 September 1989

More named asteroids discovered by Mizuno, Y., Furuta, T.

All 42

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