(6663) Tatebayashi Main-belt Asteroid

Discovered on 12 February 1993 by T. Kobayashi at Oizumi.

Named for a city in Kanto Plain in the eastern part of Gunma Prefecture. Famous for the Tsutsujigaoka Park, where some of the trees are 1000 years old and 10~000 azalea blossoms bloom every year, the city is blessed by its beautiful natural surroundings. There are several lakes, such as Jonuma and Tataranuma, where swans and other birds come regularly. Tatebayashi is also the birthplace of nature writer Katai Tayama and Japan's first female astronaut, Chiaki Mukai. The Tatebayashi Children's Science Exploratorium held a “star” naming competition to commemorate her second space shuttle flight, and this was a winning entry.Naming citation (19990202/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Tatebayashi is today

Seen from above the solar system on 2026-10-14: Tatebayashi is 3.00 au from the Sun and 2.39 au from Earth. Computed from JPL's orbital elements.

Facts

Number	6663
Provisional designation	1993 CC
Orbit class	Main-belt Asteroid
Diameter	8.58 km (#6,087 largest of 17,440 named asteroids with a measured size)
Albedo	0.316
Rotation period	4.80 hours
Absolute magnitude (H)	12.4
Orbital period	4.36 years
Semi-major axis	2.67 au
Perihelion – aphelion	2.31 – 3.02 au
Eccentricity	0.133
Inclination	13.8°
Closest distance between its orbit and Earth's (MOID)	1.35 au

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

More named asteroids discovered by T. Kobayashi

All 288

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