Lat: 42.4°S, Long: 25.9°E, Diam: 42 km, Depth: 2.42 km, Rükl: 67
(IAU Directions) NICOLAI.--A tolerably regular ring-plain, 18 miles in diameter, S. of Riccius, with a border, rising more than 6,000 feet above a level floor, on the N. side of which Schmidt shows a minute crater. The bright plain surrounding this formation abounds in small craters; and on the E. is a number of curious enclosures, many of them overlapping.
Depth data from Kurt Fisher database
- Westfall, 2000: 2.42 km
- Viscardy, 1985: 1.8 km
- Satellite craters Nicolai E and G are on the ALPO list of bright ray craters.
Friedrich Bernhard Gottfried; German astronomer (1793-1846).