6229 Tursachan
6229 Tursachan, provisional designation, is a Themistian asteroid from the outer regions of the asteroid belt, approximately in diameter. It was discovered on 4 November 1983, by American astronomer Brian Skiff at Lowell's Anderson Mesa Station near Flagstaff, Arizona, in the United States. The presumed C-type asteroid has a rotation period of 16.6 hours and is possibly elongated. It was named after a Gaelic word meaning "Standing Stones".
Orbit and classification
Tursachan is a Themistian asteroid that belongs to the Themis family, a very large family of carbonaceous asteroids, named after 24 Themis.It orbits the Sun in the outer main-belt at a distance of 2.5–3.6 AU once every 5 years and 5 months. Its orbit has an eccentricity of 0.18 and an inclination of 2° with respect to the ecliptic. The body's observation arc begins with a precovery taken at Palomar Observatory just 5 nights prior to its official discovery observation at Anderson Mesa.
Physical characteristics
Tursachan is an assumed C-type asteroid, which agrees with the overall spectral type for members of the Themis family.Rotation period
In September 2010, a rotational lightcurve of Tursachan was obtained from photometric observations in the R-band by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 16.596 hours with a brightness amplitude of 0.57 magnitude, indicative of an elongated shape.Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Tursachan measures between 10.34 and 11.603 kilometers in diameter and its surface has an albedo between 0.07 and 0.089.The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.08 and calculates a diameter of 8.61 kilometers based on an absolute magnitude of 13.69.