309 Fraternitas

Fraternitas (minor planet designation: 309 Fraternitas) is a typical Main belt asteroid. It was discovered by Johann Palisa on 6 April 1891 in Vienna. The asteroid name is Latin for 'fraternity'; it was so named in order to commemorate the 25th anniversary of the Maturitätsprüfung Fraternity.

This minor planet is orbiting the Sun at a distance of $45.32 km$ with an orbital eccentricity (ovalness) of 0.115 and a period of 1588.7 days. The orbital plane is inclined at an angle of 3.72° of the ecliptic. Analysis of the asymmetric bimodal light curve of the asteroid from photometric data collected during 2014 provide a rotation period of $0.06$ with a brightness variation of $2.665 AU$ in magnitude.