Andrew Planck

Astronomer, Teacher, Musician

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Catharina moon craters

Theophilus, Cyrillus, Catharina Moon Craters West of Mare Nectaris

Theophilus, Cyrillus, Catharina Moon Craters West of Mare Nectaris

Theophilus, Cyrillus, Catharina: [SE/L12; L=24°E on The Field Map] This is the most imposing trio of moon craters on the Moon. They are located just west of Mare Nectaris and have their own distinct personalities. Theophilus is a spectacular formation

Andrew Planck October 27, 2025October 12, 2025 chain of moon craters, Lunar Days in October, Moon craters No Comments Read more

Theophilus – One of a Trio of Imposing Moon Craters

Theophilus – One of a Trio of Imposing Moon Craters

The week of September 8-14 takes us from Day 16 to Day 23. This week we will highlight the moon crater Theophilus, visible on Thursday night. Theophilus, Cyrillus, Catharina: [Repeated from Day 5–SE/L12; L=24°E] This is the most imposing trio

Andrew Planck September 8, 2025September 3, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in September No Comments Read more

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It is highly recommended that you get a copy of Sky and Telescope's Field Map of the Moon, the very finest Moon map available for use at the telescope. It is available for $10.95 at www.skyandtelescope.com and on Amazon. All features mentioned in this blog will be keyed to the grid on the Field Map and will look like this: Plato: [NW/D9]

Credits: Courtesy of Gray Photography of Corpus Christi, Texas Lunar photos: NASA / USGS / BMDO / LROC / ASU / DLR / LOLA / Moon Globe. Used by permission

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Andrew Planck
Andrew Planck
Author and Astronomer Andrew Planck shepherds you to the moon and its mysteries of intrigue and surprise. Learn about the moon’s most fascinating objects, understand how the moon was formed and the names of many of the craters … and why they honor individuals who have changed the course of history.
Andrew Planck
Latest posts by Andrew Planck (see all)
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