What is the circumference of the planet Earth?
Earth's circumference
Both the metre and the nautical mile were originally defined as a subdivision of the Earth's circumference; today the circumference around the poles is almost exactly 40,000 km and 360 × 60 nautical miles long.
3854 George
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), "George" measures between 3.02 and 3.26 kilometers in diameter and its surface has an albedo between 0.22 and 0.46. In 2017, a WISE-study dedicated to Mars-crossing asteroids gave a somewhat larger diameter of 3.62 kilometers with an albedo of 0.308. The "Collaborative Asteroid Lightcurve Link" assumes an albedo of 0.30 and calculates a diameter of 3.67 kilometers based on an absolute magnitude of 14.1.