is a trans-Neptunian object located in the Kuiper belt, a region of the Solar System beyond the orbit of Neptune. It is a member of the plutinos, a population of Kuiper belt objects in a 2:3 orbital resonance with Neptune, like Pluto. The object measures approximately in diameter. It was discovered on 26 July 2017, by American astronomers David Tholen, Scott Sheppard, and Chad Trujillo at Maunakea Observatory in Hawaii, but not announced until 31 May 2018 due to observations made in April and May 2018 refining its orbit significantly.
was photographed by the Hubble Space Telescope on 9 June 2026, during a search for moons around large trans-Neptunian objects.
Orbit and classification
is a large plutino, a subgroup of the resonant trans-Neptunian objects located in the inner region of Kuiper belt. Named after the group's largest member, Pluto, the plutinos have a 2:3 orbital resonance with Neptune.
It orbits the Sun at a distance of 31.4–47.8 AU once every 249 years and 6 months (91,128 days; semi-major axis of 39.63 AU). Its orbit has an eccentricity of 0.21 and an inclination of 14° with respect to the ecliptic. The body's observation arc begins with a precovery by Pan-STARRS in June 2012.
Numbering and naming This minor planet was numbered by the Minor Planet Center on 22 March 2024 (). , it has not been named.
Physical characteristics
Diameter and albedo
According to Johnston's Archive, measures 662 kilometers in diameter assuming an albedo of 0.074 for the body's surface. This makes a notably large body for how late it has been discovered, being the fifth largest plutino in the Solar System, after , Orcus, Achlys, and Ixion, and the largest discovered since Orcus in 2004.
Rotation period
As of 2018, no rotational lightcurve of has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown.
See also – an elongated plutino with a similar size as
References
External links
List of Transneptunian Objects, Minor Planet Center