Sunspot region AR12617

Number of
sunspots
Size Class Magn. Class Spot Location
2016/12/12 3 10 BXO N17W44
2016/12/13 3 10 BXO N16W59
2016/12/14 4 70 CAO N16W72
2016/12/15 4 70 CSO N16W86
2016/12/16 4 70 CSO N16W0*
B
5

The top 5 solar flares from sunspot region 12617

Start Maximum End
1B2.982016/12/1503:2403:3003:34
2B2.432016/12/1609:3809:4309:53
3B1.242016/12/1117:1017:1517:18
4B1.192016/12/1119:1619:2519:29
5B12016/12/1604:2604:2904:36

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Last X-flare2024/12/08X2.2
Last M-flare2024/12/23M1.0
Last geomagnetic storm2024/12/17Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 2024152.5 -13.9
December 2024106.6 -45.9
Last 30 days116.1 -41.8

This day in history*

Solar flares
12015M6.75
21998M3.34
32013M2.36
42013M1.97
52001M1.69
DstG
12002-67
22000-62G2
31989-60
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*since 1994

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