Encyclopedia: 820...

Encyclopedia : 8 : 8 : 820 (7 articles)

820
Years: 816 817 818 819 - 820 - 821 822 823 824 Decades: 790s 800s 810s - 820s - 830s 840s 850s Centuries: 8th century - 9th century - 10th century Events Persian mathematician Muḥammad ibn Mūsā al-Ḵwārizmī founded algebra.Michael II succeeds Leo V as Byzantine EmperorThe Histori..

820s
Centuries: 8th century - 9th century - 10th century Decades: 770s - 780s - 790s - 800s - 810s - 820s - 830s - 840s - 850s - 860s - 870s Years: 820 821 822 823 824 825 826 827 828 829 Events Egbert of Wessex rises to the position of Bretwalda.The Saracens conquer Crete and invade Sicily.The King..

820s BC
Centuries: 10th century BC - 9th century BC - 8th century BC Decades: 870s BC 860s BC 850s BC 840s BC 830s BC - 820s BC - 810s BC 800s BC 790s BC 780s BC 770s BC Events and trends 827 BC - Zhou xuan wang becomes King of the Zhou Dynasty of China.825 BC - Takelot II, king of Egypt, dies. Crown Pr..

820 Adriana
820 Adriana Name Name Adriana Designation 1916 ZB Discovery Discoverer Max Wolf Discovery date March 30, 1916 Discovery site Heidelberg Orbital elements Epoch August 18, 2005 (JDCT 2453600.5) Eccentricity (e) 0.052 Semimajor axis (a) 3.130 AU Perihelion (q) 2.968 AU ..

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