Cyrillus (crater)
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| Crater characteristics | |
 Location of Cyrillus crater. |
|
| Coordinates | 13.2° S, 24.0° E |
|---|---|
| Diameter | 98 km |
| Depth | 3.6 km |
| Colongitude | 335° at sunrise |
| Eponym | Saint Cyril |
Cyrillus is a lunar impact crater located on the northwest edge of Mare Nectaris. Intruding into the northeast rim is the equally-large, and younger Theophilus crater. To the south is another prominent crater named Catharina. Together these three craters form a prominent trio in the southeast quadrant of the moon. To the northwest is Ibn-Rushd crater. The crater Cyrillus is named after Saint Cyril of Alexandria, a 4th-century Coptic Pope and theologian. To the northwest is Ibn-Rushd crater.[1]
The floor of Cyrillus contains a reduced central hill and the considerable crater Cyrillus A. The walls of the broken formation of Cyrillus remain intact up until the point of junction with Theophilus.[2] Slightly northeast of its center, three rounded mountains rise to heights of 1,000 meters above Theophilus' floor, Cyrllius Alpha, Delta, and Eta.[3]
[edit] Satellite craters
By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Cyrillus crater.[4]
| Cyrillus | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 13.8° S | 23.1° E | 17 km |
| C | 12.3° S | 21.5° E | 12 km |
| E | 15.8° S | 25.3° E | 11 km |
| F | 15.3° S | 25.5° E | 44 km |
| G | 15.6° S | 26.6° E | 8 km |
The following craters have been renamed by the IAU.
- Cyrillus B — See Ibn-Rushd crater.
[edit] References
- ^ Autostar Suite Astronomer Edition. CD-ROM. Meade, April 2006.
- ^ Moore, Patrick (2001). On the Moon. Sterling Publishing Co.. ISBN 0-304-35469-4. p. 81, 209
- ^ Grego, Peter (2005). Moon Observer's Guide. Springer. ISBN 1852337486. p. 207
- ^ Bussey, B.; Spudis, P., (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 0-521-81528-2.
