The Aratar
Powers
Of the Valar and Valie, nine were chief in power and
reverence. But
one, Melkor, was removed from their number, leaving eight. These eight
are called the Aratar.
They are Manwe and Varda, Ulmo, Yavanna and Aule,
Mandos, Nienna, and Orome.
Manwe is their King under Eru. In majesty, they are
peers, beyond
compare of any others of the Valar, Maiar, or any other order that Eru
has sent into Ea.
Reference: Silmarillion
"Valaquenta: Of the Valar"