(1871) Astyanax Jupiter Trojan

Discovered on 24 March 1971 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.

Where Astyanax is today

MercuryVenusEarthEarthMarsMarsJupiterJupiterAstyanaxAstyanax

Seen from above the solar system on 2026-10-14: Astyanax is 5.20 au from the Sun and 4.26 au from Earth. Computed from JPL's orbital elements.

Facts

Number1871
Provisional designation1971 FF
Orbit classJupiter Trojan
Diameter27.8 km (#1,494 largest of 17,440 named asteroids with a measured size)
Albedo0.0760
Rotation period6.52 hours
Absolute magnitude (H)11.24
Orbital period11.9 years
Semi-major axis5.22 au
Perihelion – aphelion5.04 – 5.39 au
Eccentricity0.0329
Inclination8.61°
Closest distance between its orbit and Earth's (MOID)4.03 au

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

Also discovered on 24 March 1971

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