(30704) Phegeus Jupiter Trojan

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

Phegeus was the oldest son of Dares, a priest of the god Hephaistos. Phegeus was fatally wounded with the spear of Diomedes.Naming citation (20030318/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Phegeus is today

MercuryVenusEarthEarthMarsMarsJupiterJupiterPhegeusPhegeus

Seen from above the solar system on 2026-10-14: Phegeus is 5.41 au from the Sun and 5.04 au from Earth. Computed from JPL's orbital elements.

Facts

Number30704
Provisional designation3250 T-3
Orbit classJupiter Trojan
Diameter27.0 km (#1,543 largest of 17,440 named asteroids with a measured size)
Albedo0.0880
Absolute magnitude (H)11.36
Orbital period12.1 years
Semi-major axis5.27 au
Perihelion – aphelion5.06 – 5.48 au
Eccentricity0.0402
Inclination14.9°
Closest distance between its orbit and Earth's (MOID)4.08 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.