Planetary body
Name
Ryugu
Secondary names
(162173), 1999 JU3
Discovery date
10 May 1999
Discoverer
LINEAR project
Family
asteroid
Dynamic family
near-Earth asteroid
Physical type
rocky
Spectral group
C
Spectral type
C
Comments
Apollo asteroid family. Visited by the sample-return mission Hayabusa2 (JAXA)
Periapsis
144410000.0 $km$
Apoapsis
211820000.0 $km$
Semimajor axis
177960000.0 $km$ (1.19 $AU$)
Eccentricity
0.19027
Inclination to ecliptic
5.884°
Period
473.86 days
Period
0.3178 days
Mean radius
0.448 $km$
Mass
450000000000.0 $kg$ (0.001 Earth mass)
Mean density
1.19 $g/cm^{3}$

Surface

Gravity
0.00012 $m/s^{2}$
Geometric albedo (Vis)
0.045