Solar cycle 3
| Solar cycle 3 | |
|---|---|
| Sunspot Data | |
| Start date | June 1775 |
| End date | September 1784 |
| Duration (years) | 9.3 |
| Max count | 158.5 |
| Max count month | May 1778 |
| Min count | 9.5 |
| Cycle chronology | |
| Previous cycle | Solar cycle 2 (1766-1775) |
| Next cycle | Solar cycle 4 (1784-1798) |
William Herschel began observing sunspots during this period.
Solar cycle 3 was the third solar cycle since 1755, when extensive recording of solar sunspot activity began.[1][2] The solar cycle lasted 9.3 years, beginning in June 1775 and ending in September 1784. The maximum smoothed sunspot number (monthly number of sunspots averaged over a twelve-month period) observed during the solar cycle was 158.5 (May 1778), and the minimum was 9.5.[3] The maximum is identical with that of solar cycle 22, where the peak of 158.5 occurred in July 1989, making it the equal third highest peak on record.[4]
William Herschel began observing sunspots during this period.[5]
See also
References
- ↑ Kane, R.P. (2002). "Some Implications Using the Group Sunspot Number Reconstruction". Solar Physics 205(2), 383-401.
- ↑ "The Sun: Did You Say the Sun Has Donuts?". Space Today Online. Retrieved 12 August 2010.
- ↑ SIDC Monthly Smoothed Sunspot Number. ""
- ↑ Wilson, Robert M.; Hathaway, David H.; Reichmann, Edwin J. (August 1996). On the Importance of Cycle Minimum in Sunspot Cycle Prediction (NASA Technical Paper 3648) (PDF).
- ↑ Vaquero, J.M.; Vázquez, M. (2009). The Sun Recorded Through History. Springer. p. 79. ISBN 0387927905.
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