(2335) James Mars-crossing Asteroid

Discovered on 17 October 1974 by E. F. Helin at Palomar.

Named in honor of James G. Williams, celestial mechanician who extended the theory of secular perturbations to orbits of high inclination. This minor planet lies very near one of the secular resonances discovered by Williams, and its argument of perihelion librates around the value of 90 degrees.Naming citation (MPC 5688), IAU / Minor Planet Center, via NASA/JPL

Where James is today

MercuryVenusEarthEarthMarsMarsJamesJames

Seen from above the solar system on 2026-10-14: James is 2.56 au from the Sun and 2.27 au from Earth. Computed from JPL's orbital elements.

Facts

Number2335
Provisional designation1974 UB
Orbit classMars-crossing Asteroid
Diameter6.37 km (#8,420 largest of 17,440 named asteroids with a measured size)
Albedo0.205
Spectral typeSa
Absolute magnitude (H)13.65
Orbital period3.09 years
Semi-major axis2.12 au
Perihelion – aphelion1.36 – 2.89 au
Eccentricity0.360
Inclination36.3°
Closest distance between its orbit and Earth's (MOID)0.619 au

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

Also discovered on 17 October 1974

More named asteroids discovered by E. F. Helin