Solar cycle 7

Solar cycle 7 was the seventh solar cycle since 1755, when extensive recording of solar sunspot activity began. The solar cycle lasted 10.5 years, beginning in May 1823 and ending in November 1833 (thus overlapping the Dalton Minimum). The maximum smoothed sunspot number observed during the solar cycle was 119.2 (November 1829), and the starting minimum was 0.2.

Solar cycle 7
Sunspot data
Start date	May 1823
End date	November 1833
Duration (years)	10.5
Max count	119.2
Max count month	November 1829
Min count	0.2
Cycle chronology
Previous cycle	Solar cycle 6 (1810–1823)
Next cycle	Solar cycle 8 (1833–1843)

Heinrich Schwabe, who discovered the sunspot cycle, began his personal observations in 1826, during solar cycle 7.

See also

• List of solar cycles