(516977) 2012 HZ84 (provisional designation 2012 HZ84) is a small trans-Neptunian object from the Kuiper belt located in the outermost region of the Solar System, approximately 74 kilometers (46 miles) in diameter.

[1] In December 2017, this classical Kuiper belt object was imaged by the spacecraft from afar at a record distance from Earth.

[2] As a cubewano, also known as classical Kuiper belt object,[4] 2012 HZ84 is located in between the resonant plutino and twotino populations and has a low-eccentricity orbit.

[3] The body's observation arc begins with its first observation on 17 April 2012, made by astronomers David Osip, Paul Schechter, David Borncamp, Susan Benecchi and Scott Sheppard of the New Horizons KBO Search (268) team using the Magellan II (Clay) telescope at the Las Campanas Observatory, located in the Atacama desert in Chile.

This record was previously held by the Voyager 1 spacecraft which took the iconic Pale Blue Dot image at 6.06 billion kilometers from Earth in February 1990.