2678 Aavasaksa
2678 Aavasaksa, provisional designation, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter.
The asteroid was discovered on 24 February 1938, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. It was named for the Aavasaksa hill in Finland.
Orbit and classification
The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 2.1–2.5 AU once every 3 years and 5 months. Its orbit has an eccentricity of 0.09 and an inclination of 3° with respect to the ecliptic.Aavasaksa was first identified as at Bergedorf Observatory in 1916. Its observation arc begins at Mount Wilson Observatory in 1935, or 3 years prior to its official discovery observation at Turku.
Physical characteristics
In January 2009, a provisional and fragmentary photometric lightcurve of Aavasaksa was obtained at the Via Capote Observatory in California. Lightcurve analysis gave it a longer than average rotation period of 24 hours with a brightness amplitude of 0.4 in magnitude.According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Aavasaksa measures 8.4 kilometers in diameter and its surface has an albedo of 0.28, while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24, derived from 8 Flora, the Flora family's largest member and namesake, and calculates a diameter of 8.2 kilometers.