JTC-1766
Mare Crisium
Inside the Sea of Crises, a perfectly isolated oval ringed by mountains and the easiest lunar sea to pick out with the naked eye.
- Coordinates
- 16.40° N, 57.80° E
- Diameter
- 6.0 km
Schematic elevation, rendered from catalogue data. Sunlight from the west.
Mare Crisium
19.70° N, 62.10° E
High on the ringed wall of Crisium, close enough to the limb that libration slowly rocks it in and out of view.
A rewarding challenge target. Some months it tips toward Earth, some months it hides.
The bright, ancient uplands. Rougher country, more dramatic in a telescope.
Dedication
$189
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The Moon keeps one face turned toward Earth, so your crater is fixed in the same spot of sky every clear night of your life.
JTC-1830 lies at 19.70° N, 62.10° E, in Mare Crisium. On the map, north is up and east is to the right, exactly as it appears through a telescope from the high desert.

Mare Crisium
Inside the Sea of Crises, a perfectly isolated oval ringed by mountains and the easiest lunar sea to pick out with the naked eye.
Mare Serenitatis
Where the Sea of Serenity meets the highlands, on ground that has been struck, flooded by lava, and struck again.
Mare Tranquillitatis
Less than 200 kilometres from Tranquility Base, where Apollo 11 set down in July 1969. The same dark basalt that took the first human footprint.