The name Gǃkúnǁʼhòmdímà is from the Juǀʼhoansi people of Namibia. Gǃkúnǁʼhòmdímà is the beautiful aardvark girl of Juǀʼhoan mythology, who sometimes appears in the stories of other San peoples as a python girl or elephant girl; she defends her people and punishes wrongdoers using gǁámígǁàmì spines, a rain-cloud full of hail, and her magical oryx horn. The name "Gǃkúnǁʼhòmdímà" derives from gǃkún 'aardvark', ǁʼhòm mà 'young woman' and the feminine suffix dí. The moon Gǃòʼé ǃHú is named after her horn: it means simply 'oryx' 'horn'. In the Juǀʼhoan language, the planet and moon names are pronounced and, respectively. Usually, when speaking English, the click consonants in words from Juǀʼhoan and other San languages are simply ignored, resulting in and or . ASCII renderings of the names would be for the primary and or for the secondary.
Stellar occultation events indicate that Gǃkúnǁʼhòmdímà has an effective diameter of 600–670 km, but is not spherical. Due to complications from its non-spherical shape, the rotational period cannot be definitely determined from current light-curve data, which has an amplitude of Δm = 0.03 ± 0.01 mag, but the simplest solution is 11.05 hours. It is almost certainly between that and 41 hours. The system mass is, about 2% that of Earth's moon and a bit more than Saturn's moon Enceladus. The moon is unlikely to comprise more than 1% or so of the total. Its geometric albedo is approximately 0.15, and its density approximately 1. , Mike Brown lists it as highly likely to be a dwarf planet, due to its size. However, Grundy et al. propose that the low density and albedo, combined with the fact that TNOs both larger and smaller – including comets – have a substantial fraction of rock in their composition, indicate that it and similar objects such as 174567 Varda and 120347 Salacia may retain a degree of porosity in their physical structure, having never collapsed and possibly differentiated into planetary bodies like higher density or higher albedo 90482 Orcus and 50000 Quaoar, or at best are only partially differentiated; such objects would never have been in hydrostatic equilibrium and would not be dwarf planets at present.
Satellite
Gǃkúnǁʼhòmdímà has one known satellite, Gǃòʼé ǃHú, which is one of the reddest known TNOs. Size and mass can only be inferred. The magnitude difference between the two is mag. This would correspond to a difference in diameter of a factor of, assuming the same albedo. Red satellites often have lower albedos than their primaries, but that may not be the case with this moon. Such uncertainties do not affect density calculations as the moon has only about 1% the total volume, and so is less important than the uncertainties in the primary's diameter.
