1 day / second

0.5 AU

3 Juno

Asteroid

A large main-belt asteroid discovered in 1804, measuring 234 kilometers across and distinguished by its unusually reflective surface that makes it one of the brightest objects in the asteroid belt.

Key Facts

orbital regime

Asteroid Belt

learn more

Wikipedia

mass

2.6700e+19 kg

radius

127 km

hill radius

61,430 km

semi-major axis

3.35 AU

eccentricity

0.256

inclination

12.991º

longitude of the ascending node

169.84º

argument of periapsis

247.74º

orbital period

6.131 years

surface gravity

0.011 g

discovery date

September 1, 1804

discovered by

Karl Ludwig Harding at Lilienthal Observatory

name origins

Named after Juno, the Roman goddess

dimensions

233.92 × 246.596 kilometers

albedo

0.238

material composition

S-type asteroid

density

2.98 g/cm³
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