Tacquet (crater)

Tacquet
Coordinates 16°36′N 19°12′E / 16.6°N 19.2°E / 16.6; 19.2Coordinates: 16°36′N 19°12′E / 16.6°N 19.2°E / 16.6; 19.2
Diameter 7 km
Depth 1.3 km
Colongitude 340° at sunrise
Eponym André Tacquet

Tacquet is a small, bowl-shaped crater that lies near the southern edge of Mare Serenitatis, in the northeast part of the Moon. The surface near the crater is marked by high-albedo ejecta. To the west is a system of rilles designated the Rimae Menelaus, southeast is al-Bakri crater (or Al-Bakri) about 65 km southeast, about 60 km WSW is Auwers crater and nearly 80 km west is the larger Menelaus crater.

Its diameter is 7 km long and is 1,300 meters deep. The area is about 30 to 35 km² and the perimeter is about 20 km.

Names

Some sources spell this crater's name 'Taquet'. The name was given in the honor of Belgian mathematician André Tacquet (1612-1660). Before the 1651 nomenclature, there was a crater named "Tacquet" mentioned in Michael van Langren's 1645 map and was written as "Tacquetti" (Latin: "Tachettis").[1] Its location was what is now Laplace A, the other is now known as Helicon.

Satellite craters

Satellite craters of Tacquet
Apollo 15 image

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Tacquet.

Tacquet B is to the southeast 14 km in diameter, inside is a smaller crater covering about a quarter of the diameter and is being a double crater. Further south-southeast is Tacquet C that is 6 km in diameter.

Tacquet Latitude Longitude Diameter
B 15.8° N 20.0° E 14 km
C 13.5° N 21.1° E 6 km

The following craters have been renamed by the IAU.

References

  1. ↑ Langren, Michael van (1645). "Map of the Moon in the book Plenilunii lumina Austriaca Philippica".

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