He is the future Buddha who will only reveal the teachings to the world again 5000 years after GAUTAMA has passed.
Maitreya is the vision of the future, hence he is seated in the Bhadrasana. In this Asana, the feet are positioned next to each other on the ground. This shows that the throne is not yet assured.
Until he appears on earth again, Maitreya will spend the time in the Heaven of the Gods as Bodhisattva Natha.
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