1541 Estonia, provisional designation 1939 CK, is an asteroid from the central regions of the asteroid belt, approximately 21 kilometers in diameter. It was discovered on 12 February 1939, by astronomer Yrjö Väisälä at the Iso-Heikkilä Observatory near Turku, Finland.^[11] The asteroid was named after the Baltic country of Estonia.^[2]

Estonia is a non-family asteroid from the main belt's background population. It orbits the Sun in the central main belt at a distance of 2.6–3.0 AU once every 4 years and 7 months (1,683 days). Its orbit has an eccentricity of 0.07 and an inclination of 5° with respect to the ecliptic.^[1]

The asteroid was first identified as A916 GE at the Simeiz Observatory in April 1916. The body's observation arc begins with its identification as A923 VE at Yerkes Observatory in November 1923, more than 15 years prior to its official discovery observation at Turku.^[11]

In the SMASS classification, Estonia is a Xc-subtype that transitions from the X-type to the carbonaceous C-type asteroids.^[1]

This minor planet was named after the Baltic country of Estonia, just south of the Gulf of Finland and Finland itself. The two countries are inhabited by related Balto-Finnic peoples. Estonia regained independence from Soviet rule in 1991.^[2] The official naming citation was published by the Minor Planet Center in January 1956 (M.P.C. 1350).^[12]