This high eccentricity brings Juno closer to the Sun at perihelion than Vesta and further out at aphelion than Ceres. Its orbit is moderately inclined at around 12° to the ecliptic, but has an extreme eccentricity, greater than that of Pluto. Its mean distance to the Sun is 399.4 million km - which is slightly closer to the Sun than Ceres or Pallas. Harding in Lilienthal, close to Bremen in Germany. It was discovered on Septemat 22h12 LMT by German astronomer Karl L. Juno can reach +7.5 at a favourable opposition, which is brighter than Neptune. This high albedo explains its relatively high apparent magnitude for a small object not near the inner edge of the asteroid belt. It is one of the two largest stony (S-type) asteroids, and is estimated to contain 1% of the total mass of the asteroid belt.Īmongst S-type asteroids, Juno is unusually reflective. It is the 11th-largest asteroid but was the third asteroid to be discovered. 3 Juno is a minor planet or asteroid that orbits around the sun in the asteroid belt between Mars and Jupiter.
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