Sinan is an impact crater

Impact crater

In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...

 on the planet Mercury

Mercury (planet)

Mercury is the innermost and smallest planet in the Solar System, orbiting the Sun once every 87.969 Earth days. The orbit of Mercury has the highest eccentricity of all the Solar System planets, and it has the smallest axial tilt. It completes three rotations about its axis for every two orbits...

, 147 kilometers in diameter. It is located at 15.5°N, 29.8°W, northeast of the crater Yeats

Yeats (crater)

Yeats is an impact crater on the planet Mercury, 100 kilometers in diameter. It is located at 9.2°N, 34.6°W, south of the crater Li Po and southwest of the crater Sinan. Its rim is circular and intact, except where an indentation is made by a craterlet on the north side. It is bordered by a...

 and southeast of the crater Li Po. It has one craterlet on the south-southwestern side of the crater floor, and it has a symmetrical pit slightly west of the center. Together with a smaller unnamed crater on its southern border, the crater Sinan forms a shape similar to that of the spade found in card games. The crater is named after Mimar Sinan, a 16th century Turkish

Turkish people

Turkish people, also known as the "Turks" , are an ethnic group primarily living in Turkey and in the former lands of the Ottoman Empire where Turkish minorities had been established in Bulgaria, Cyprus, Bosnia and Herzegovina, Georgia, Greece, Kosovo, Macedonia, and Romania...

 architect. The name was adopted by the International Astronomical Union

International Astronomical Union

The International Astronomical Union IAU is a collection of professional astronomers, at the Ph.D. level and beyond, active in professional research and education in astronomy...

in 1976.