Sunspot region AR8535

Number of
sunspots
Size Class Magn. Class Spot Location
1999/05/07 1 160 HAX N20E67
1999/05/08 3 260 CHO N21E54
1999/05/09 4 300 DHO N22E42
1999/05/10 7 330 DKO N21E30
1999/05/11 8 310 CKO N21E16
1999/05/12 10 320 CKO N21E06
1999/05/13 11 270 CKO N22W09
1999/05/14 9 370 CKO N22W23
1999/05/15 9 330 CKO N21W36
1999/05/16 7 370 CKO N22W49
1999/05/17 2 340 HKX N22W62
1999/05/18 2 320 DKC N22W76
1999/05/19 2 210 HSX N22W88

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Space weather facts

Last X-flare2026/03/30X1.5
Last M-flare2026/04/09M1.0
Last geomagnetic storm2026/04/18Kp6- (G2)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 202683.6 -2.3
Last 30 days94.5 +32.8

This day in history*

Solar flares
12022X2.25
22022M7.29
32001M5.99
41998M1.96
52022M1.9
DstG
12002-149G3
21985-124G3
31981-97G2
41973-76G2
51975-70G2
*since 1994

Aurora on this day in history

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