Closest approach to Earth: 34,600,000 miles
Mean distance from the sun: 141,600,000 miles
Period of rotation around the sun: 1.88089 years
Sideral rotation period: 24 hours, 37 minutes, 22.66 seconds
Mean surface atmospheric temperature: -23 degrees
Visual albedo: 0.159
Pole star BD 52, degrees 2,880
Visual magnitude at mean opposition: -2.01
Mass: 0.1074
Density: 3.93 ... Diameter: 0.532
Inclination for equated orbit: 24.936 degrees
Gravitational escape velocity: 3,121 miles per hour
Inclination for orbit: 1 ...