Roman Catechism 8.14

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

Section 14. First of all, He ascended because the glorious kingdom of the highest heavens, not the obscure abode of this earth, presented a suitable dwelling place for Him whose body, rising from the tomb, was clothed with the glory of immortality.