162173 Ryugu

162173 Ryugu, provisional designation 1999 JU₃, is a near-Earth object and a potentially hazardous asteroid of the Apollo group. It measures approximately 900 metres in diameter and is a dark object of the rare spectral type Cb, with qualities of both a C-type asteroid and a B-type asteroid.
== Overview ==
In June 2018, the Japanese spacecraft Hayabusa2 arrived at the asteroid. After making measurements and taking samples, Hayabusa2 left Ryugu for Earth in November 2019 and returned the sample capsule to Earth on 5 December 2020. The samples showed the presence of organic compounds, such as uracil (one of the four components in RNA) and vitamin B3.
=== Orbit ===
The origin of 162173 Ryugu may be either 495 Eulalia or 142 Polana. Ryugu orbits the Sun at a distance of 0.96–1.41 AU once every 16 months (474 days; semi-major axis of 1.19 AU). Its orbit has an eccentricity of 0.19 and an inclination of 6° with respect to the ecliptic. It has a minimum orbital intersection distance with Earth of 95,443.442 km (0.000638 AU), equivalent to 0.23 lunar distances.
Category:Asteroids
Category:Apollo
Category:Potentially Hazardous
Category:Near Earth Object
Category:Other Spectral Types
Category:Geoasteroid
Category:Rubble Pile Asteroid
Category:Objects Not in Hydrostatic Equilibrium
Category:Objects with No Atmosphere
Category:Inner Solar System Object
Category:Numbered Objects
Category:Numbered Minor Planets
Category:Named Objects
Category:Named Minor Planets
Category:Objects Visited by Spacecraft