Diameter: 233 km
SMA: 2.66937 AU
Period: 4.3676 years
Eccentricity: 0.233506
Rotation: 0.3004 days
Inclination: 12.9817°
Axial tilt: 50°

Mass: 2.67x10²⁴kg
Density: 3200 kg/m³
Gravitation: 0.12 m/s²
Escape velocity: 0.18 m/s
Orbit velocity: 17.93 km/s (mean)

Moons: 0

rock and ice

Discovered on September 1, 1804, Juno is estimated to contain 1% of the total mass of the asteroid belt. Amongst the S-type asteroids, Juno is unusually reflective, which may be indicative of distinct surface properties. Juno is the second-most-massive S-type asteroid after 15 Eunomia. At perihelion the estimated maximum temperature can reach +28°C.