Discovery
Date of Discovery: 1 Jan. 1801
Discovered By: Giuseppe Piazzi
Orbit Size Around Sun
Metric: 413,690,250 km
English: 257,055,204 miles
Scientific Notation: 4.1369025 x 108 km
Astronomical Units: 2.7653485 x 100 A.U.
By Comparison: Earth is 1 A.U. from the Sun
Mean Orbit Velocity
Metric: 64,360 km/h
English: 39,991 mph
Scientific Notation: 1.7878 x 104 m/s
By Comparison: 0.600
Orbit Eccentricity
0.079138251
Equatorial Radius
Metric: 476.2 km
English: 295.9 miles
Scientific Notation: 4.7620 x 102 km
By Comparison: 487.3 x 454.7 km oblate spheroid
Equatorial Circumference
Metric: 2,992.1 km
English: 1,859.2 miles
Scientific Notation: 2.99205 x 103 km
By Comparison: 0.0747
Volume
Metric: 452,331,448 km3
English: 108,520,085 miles3
Scientific Notation: 4.52331 x 108 km3
Mass
Metric: 947,000,000,000,000,000,000 kg
Scientific Notation: 9.47 x 1020 kg
Density
Metric: 2.09 g/cm3
Surface Area
Metric: 2,849,631 km2
English: 1,100,249 square miles
Scientific Notation: 2.8496 x 106 km2
Surface Gravity
Metric: 0.28 m/s2
Escape Velocity
Metric: 1,855 km/h
Sidereal Rotation Period
0.378 Earth Days
9.07417 Hours
By Comparison: 0.38