(574372) 2010 JO179

is a large, high-order resonant trans-Neptunian object in the outermost regions of the Solar System, probably somewhere between in diameter. Long-term observations suggest that the object is in a meta-stable 5:21 resonance with Neptune. Other sources classify it as a scattered disc object.
It is possibly large enough to be a dwarf planet.
has not yet been imaged by high-resolution telescopes, so it has no known moons. The Hubble Space Telescope is planned to image in 2026, which should determine if it has significantly sized moons.

Fandom thesolarsystem:2010_JO₁₇₉

First observation and orbit

The Minor Planet Center credits the object's first official observation on 10 May 2010 to Pan-STARRS at Haleakala Observatory, Hawaii, United States. The observations were made by Pan-STARRS Outer Solar System Survey. There are 4 February 1951 precovery images from the Palomar Observatory Sky Survey, extending the observation arc by approximately 60 years. The precovery images are from the same year the object came to perihelion.
orbits the Sun at a distance of 39.6–118 AU once every 699 years and 5 months. Its orbit has a high eccentricity of 0.50 and an inclination of 32° with respect to the ecliptic.

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 10 August 2021, receiving the number in the minor planet catalog., it has not been named.

Physical characteristics

Photometry

Photometric observations of gave a monomodal lightcurve with slow rotation period of 30.6 hours, suggesting a rather spherical shape with significant albedo patchiness. An alternative period solution of a bimodal lightcurve is considered less likely. It would double the period and imply an ellipsoidal shape with an axis-ratio of at least 1.58.

Diameter and albedo

The object's mean diameter has been estimated to measure 600 to 900 kilometers, based on an assumed albedo of 0.21 to 0.07.