 Lightcurve analysis gave a short rotation period of 2.94 hours with a brightness amplitude of 0.09 magnitude ().A low brightness amplitude also indicates that the body might have a spheroidal rather than an irregular shape.According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, "Gaea" measures 11.783 and 12.048 kilometers in diameter and its surface has a high albedo of 0.462 and 0.4512, respectively.