Roman Catechism 8.6

Chapter 8 — Part I: The Creed — Article VI: He Ascended into Heaven, Sitteth at the Right Hand of God, the Father Almighty

Section 6. Neither did He ascend into heaven solely by the exercise of His supreme power as God, but also by virtue of the power which He possessed as man. Although human power alone was insufficient to accomplish this, yet the virtue with which the blessed soul of Christ was endowed was capable of moving the body as it pleased, and His body, now glorified, readily obeyed the behest of the soul that moved it. Hence, we believe that Christ ascended into heaven as God and man by His own power.