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Sunspots and active regions — March 17, 2001

March 17, 2001

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Home Sunspots and active regions March 17, 2001

Sunspots and active regions

The following active regions with sunspot groups were visible on the Sun on March 17, 2001. Coordinates are given as of the end of the day.
Group ID Location Number of sunspots Area (msh) Type CM Passage Disappearance (W90) Reappearance (W270)
№ 9384 N11 W23 07 0120 Beta Mar 16, 2001 Mar 23, 2001 Apr 6, 2001
№ 9383 S10 W70 04 0030 Beta Mar 13, 2001 Mar 20, 2001 Apr 2, 2001
№ 9376 S14 E09 03 0020 Beta Mar 19, 2001 Mar 26, 2001 Apr 8, 2001
№ 9373 S07 W20 32 0240 Beta-Gamma Mar 16, 2001 Mar 23, 2001 Apr 6, 2001

Solar cycle progression

The average monthly sunspot number (SSN) from January 1972 to March 2001. The gray background is the average SSN index.