Worlds of David Darling
Encyclopedia of Science
   
Home > Encyclopedia of Science

Juno (minor planet 3)





Juno
Images of asteroid 3 Juno taken with the Hooker telescope show what appears to be a 96-km-wide crater. The crater is visible as a darkened area in the lower left quadrant in the 833 nm and 934 nm images
The ninth largest asteroid and third to be discovered, in 1804 by the German astronomer Karl Harding (1765–1834). Surface maps of Juno made from observations by the 100-inch Hooker Telescope at Mount Wilson Observatory in 2003 show the presence of what may be a 96-km (60-mile) wide crater.


diameter 230 × 288 km
spectral class S
albedo 0.2
rotational period 7.2 hours
semimajor axis 2.669 AU
perihelion 1.979 AU
aphelion 3.358 AU
eccentricity 0.258
inclination 12.97°
period 4.36 years


Related entry

   • mythology of Juno (Encyclopedia of History)


Related category

   • NOTABLE ASTEROIDS, CENTAURS, AND KUIPER BELT OBJECTS