According to the space-based survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Menzel measures between 9.6 and 10.2 kilometers in diameter and its surface has an albedo between 0.21 and 0.25.
NASA's Wide-field Infrared Survey Explorer, through its NEOWISE mission, found that Menzel has a diameter of approximately 9.6 to 10.2 kilometers and an albedo between 0.21 and 0.25 on its surface.