Theophilus

The northernmost crater in the spectacular Theophilus-Cyrillus-Catharina chain on the edge of Mare Nectaris.


Object Type: Lunar Impact Crater

Size: 100 km diameter

Location: Chattanooga, TN (35.15°N, 85.32°W)

Equipment: Telescope (750/150mm)

Visual Description

Theophilus appeared as the most prominent crater in the famous triple-crater formation. The crater showed magnificent terraced walls with multiple layers visible, and a prominent multi-peaked central mountain complex. The crater overlaps the northern rim of Cyrillus, demonstrating its younger age. The walls rose dramatically above the crater floor.

Notable Features

  • Spectacular terraced walls with clear layer structure
  • Prominent three-peaked central mountain rising 1.4 km
  • Overlaps older crater Cyrillus to the south
  • Deep crater floor approximately 4.4 km below rim
  • Part of the famous Theophilus-Cyrillus-Catharina chain

Notes

  • Named after Theophilus of Alexandria, 4th-century patriarch
  • Best observed 6-8 days after new moon
  • One of the finest crater views on the Moon
  • Coordinates: 11.4°S, 26.4°E
  • Formed approximately 3.2 billion years ago