(5638) Deikoon Jupiter Trojan

Discovered on 10 October 1988 by Shoemaker, C. S., Shoemaker, E. M. at Palomar.

Where Deikoon is today

MercuryVenusEarthEarthMarsMarsJupiterJupiterDeikoonDeikoon

Seen from above the solar system on 2026-10-14: Deikoon is 5.75 au from the Sun and 4.91 au from Earth. Computed from JPL's orbital elements.

Facts

Number5638
Provisional designation1988 TA3
Orbit classJupiter Trojan
Diameter41.5 km (#930 largest of 17,440 named asteroids with a measured size)
Albedo0.0710
Rotation period9.24 hours
Absolute magnitude (H)10.55
Orbital period11.9 years
Semi-major axis5.23 au
Perihelion – aphelion4.67 – 5.78 au
Eccentricity0.106
Inclination10.9°
Closest distance between its orbit and Earth's (MOID)3.68 au

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

Also discovered on 10 October 1988

More named asteroids discovered by Shoemaker, C. S., Shoemaker, E. M.