(9387) Tweedledee Inner Main-belt Asteroid

Discovered on 2 February 1994 by Shiozawa, H., Urata, T. at Fujieda.

Tweedledee was of the twins in Lewis Carroll's Through the Looking Glass and What Alice Found There. When Alice meets him, he is standing under a tree with his arm round the neck of his brother Tweedledum. The name was suggested by T. Urata.Naming citation (WGSBN Bull. 3, #11, 5), IAU / Minor Planet Center, via NASA/JPL

Where Tweedledee is today

MercuryVenusEarthEarthMarsMarsTweedledeeTweedledee

Seen from above the solar system on 2026-10-14: Tweedledee is 2.06 au from the Sun and 2.95 au from Earth. Computed from JPL's orbital elements.

Facts

Number9387
Provisional designation1994 CA
Orbit classInner Main-belt Asteroid
Diameter4.56 km (#11,510 largest of 17,440 named asteroids with a measured size)
Albedo0.225
Rotation period3.53 hours
Absolute magnitude (H)13.99
Orbital period2.70 years
Semi-major axis1.94 au
Perihelion – aphelion1.77 – 2.11 au
Eccentricity0.0892
Inclination21.7°
Closest distance between its orbit and Earth's (MOID)0.806 au

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

Also named after someone called Lewis

Also discovered on 2 February 1994

More named asteroids discovered by Shiozawa, H., Urata, T.