(4768) Hartley Main-belt Asteroid

Discovered on 11 August 1988 by A. J. Noymer at Siding Spring.

Where Hartley is today

MercuryVenusEarthEarthMarsMarsHartleyHartley

Seen from above the solar system on 2026-10-14: Hartley is 3.57 au from the Sun and 4.50 au from Earth. Computed from JPL's orbital elements.

Facts

Number4768
Provisional designation1988 PH1
Orbit classMain-belt Asteroid
Diameter34.3 km (#1,178 largest of 17,440 named asteroids with a measured size)
Albedo0.0390
Rotation period22.1 hours
Absolute magnitude (H)11.57
Orbital period5.64 years
Semi-major axis3.17 au
Perihelion – aphelion2.41 – 3.93 au
Eccentricity0.239
Inclination20.1°
Closest distance between its orbit and Earth's (MOID)1.42 au

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

Also discovered on 11 August 1988

More named asteroids discovered by A. J. Noymer