(86047) 1999 OY3 (provisional designation 1999 OY3) is a trans-Neptunian object that resides in the Kuiper belt beyond Pluto.

It was discovered on July 18, 1999, at the Mauna Kea Observatory, Hawaii, USA.

1999 OY3 is a candidate member of the Haumea family and, as a result, may have a high albedo.

[8] Of the currently known Haumea-family members, 2009 OY3 has the dimmest absolute magnitude (H) of the group at 6.8, suggesting that it is also the smallest member of the group.

This article about a centaur (minor planet) or trans-Neptunian object is a stub.