MOONWATCH

January's top lunar feature to observe

Goclenius Type: Crater Size: 55km Longitude/latitude: 45° E, 10.1° S Age: Around 3.9 billion years Best time to see: Four days after new Moon (3 January and 1 February) or three days after full Moon (17–18 January) Minimum equipment: 50mm telescope Goclenius is a 55km crater located within the 600 x 500km Sea of Fertility, Mare Fecunditatis. The irregularly shaped mare resembles the shape of a diamond, with the distinctive form of 133km Langrenus on the southeast straight edge and Goclenius in a similar position on the southwest straight. Goclenius is an ancient crater, the floor of which has been flooded by lava. It sits within a region of similar company: 75km Gutenberg to the northwest, 41km Magelhaens to the southwest and 76km Colombo to the south. All of them…

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BBC Sky at Night United Kingdom (Digital) - 1 Issue, January 2025

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