Juno

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Juno
Juno, minor-planet designation 3 Juno in the Minor Planet Center catalogue system, was the third asteroid to be discovered and is the 11th-largest asteroid in the asteroid belt, and one of the two largest stony (S-type) asteroids, along with 15 Eunomia. It is estimated to contain 1% of the total mass of the asteroid belt. Juno is named after the mythological Juno, the highest Roman goddess. 3 Juno - Wikipedia, the free encyclopedia
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Short Description Juno, minor-planet designation 3 Juno in the Minor Planet Center catalogue system, was the third asteroid to be discovered and is the 11th-largest asteroid in the asteroid belt, and one of the two largest stony (S-type) asteroids, along with 15 Eunomia. It is estimated to contain 1% of the total mass of the asteroid belt. Juno is named after the mythological Juno, the highest Roman goddess. 3 Juno - Wikipedia, the free encyclopedia
Discovered by Karl Ludwig Harding
Discovery date September 1, 1804
Type Asteroid
AddInfo Juno family
Satellite of Sun
Minor planet number 3
Orbit Prograde
Rotation Direct
Apoapsis 09 502 050 000 km
Periapsis 09 297 400 000 km
Semi-major axis 09 399 725 000 km
Distance from Sun 01 2.670 70 au
Eccentricity 0.255 45
Orbital period 4.364 63 year | 1594.18 days
Orbital speed 02 17.93 km/s
Mean anomaly 033.077°
Inclination to the ecliptic 012.9817°
Longitude of the ascending node 169.8712°
Argument of periapsis 248.4100°
Diameter/Size 03 233 km
Dimensions (320×267×200)±6 km
Mass 1019×2.67 kg
Density 01 3.2 g/cm3
Surface gravity  0.12 m/s2
Escape velocity 03 180 m/s
Rotation period 7.21 hours | 0.3004 day
Equatorial rotation velocity 02 31.75 m/s
Albedo geometric 0.238
Temperature mean 03 163 K
Temperature max 03 301 K | +28°C
Apparent magnitude 7.4 to 11.55
Absolute magnitude 5.33
Angular diameter 0.30" to 0.07"
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