Tags: Planet.

Juno minor-planet designation 3 Juno in the Minor Planet Center catalogue system was the third asteroid to be discovered and is one of the larger main-belt asteroids being 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 was discovered on September 1 1804 by German astronomer Karl L. Harding.

Juno_symbol.svg
apoapsis (km)
5.0205e+11
average speed (km/s)
64548.0
mass (kg)
2670.0
orbital period (μ)
1.37843e+08
periapsis (km)
2.97401e+11
temperature (K)
163.0, 301.0
absolute magnitude
5.33
albedo
0.238
apparent magnitude
7.4
discovery date
1804-09-01
discoverer
Karl Ludwig Harding
epoch
November 30 2008 (JD 2454800.5)
escape velocity (kmh)
648.0
former name
none
rotation period (s)
51910.6

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