(30708) Echepolos Jupiter Trojan

Discovered on 16 October 1977 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.

Echepolos was the first hero in the great fight after the duel of Paris against Menelaos, who was killed by Antilochos.Naming citation (20030318/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Echepolos is today

MercuryVenusEarthEarthMarsMarsJupiterJupiterEchepolosEchepolos

Seen from above the solar system on 2026-10-14: Echepolos is 5.12 au from the Sun and 4.31 au from Earth. Computed from JPL's orbital elements.

Facts

Number30708
Provisional designation4101 T-3
Orbit classJupiter Trojan
Diameter25.4 km (#1,665 largest of 17,440 named asteroids with a measured size)
Albedo0.0690
Absolute magnitude (H)11.89
Orbital period11.8 years
Semi-major axis5.19 au
Perihelion – aphelion5.12 – 5.26 au
Eccentricity0.0130
Inclination24.2°
Closest distance between its orbit and Earth's (MOID)4.13 au

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

Also discovered on 16 October 1977

More named asteroids discovered by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T.