Bruce R. McConkie identifies Kolob as a planet.
Bruce R. McConkie, Mormon Doctrine (Salt Lake City: Bookcraft, 1958), 390
Kolob. See ASTRONOMY. Kolob means "the first creation." It is the name of the planet "nearest to the celestial, or the residence of God." It is "first in government, the last pertaining to the measurement of time. . . One day in Kolob is equal to a thousand years according to the measurement of this earth." (Book of Abraham, pp. 34-35; Abra. 3:3-9.) The time spent in the creative events connected with this earth was measured "after the Lord's time, which was after the time of Kolob." (Abra. 5:13.)