Anubis has a small rocky core that is made up of mainly iron and silicon. It has a density of 280,000 kg/m3, which is more dense than the core of Jupiter. The temperature is expected to be around 1.8 million K with a radius the size of the Earth's radius, 6,500 km. The mass is 50 times the mass of the Earth, which is 3 X 1026 kg. This gives Anubis' core a volume of 2.14 X 1019 m3.

The next layer is liquid metallic hydrogen. This is where about 95% of the hydrogen exists becuase of the massive amounts of pressure. This pressure is also responsible for the traces of ice formed from the majority of the helium, methane and trace compounds. There is a phase transition from the liquid metallic hydrogen to the liquid hydrogen, the last layer, which accounts for the remaining 5% of the hydrogen. As a result, this is a very thin layer.

Compared to Jupiter, who has the following layers: liquid hydrogen, transition, and liquid metallic hydrogen layers, which are equally distributed radially, Anubis' layering is proportionally different. Although there are no specific numbers, we know that Anubis consists of mainly liquid metallic hydrogen, therefore exibiting a thin layer of transition and liquid hydrogen. This is mainly due to the strong gravitational pull of the planet making the lighter elements fall toward the center, creating a denser layer, the liquid metallic hydrogen.