280 Philia is a fairly large Main belt asteroid. It was discovered by Johann Palisa on 29 October 1888 at the Vienna Observatory.
Sparse data collected during a 1987 study indicated this asteroid has a rotation period of approximately 64 hours, which is much longer than can be continually observed from one site. During 2010âÂÂ2011, an international collaboration to study the asteroid collected 9,037 photometric data points over 38 sessions. The resulting light curve analysis displays a rotation period of with a brightness variation of in magnitude.