Sunspot region AR8728

Number of
sunspots
Size Class Magn. Class Spot Location
1999/10/09 1 30 HSX N22E74
1999/10/10 10 150 CAO N21E62
1999/10/11 13 340 DHO N22E50
1999/10/12 22 560 EKI N22E38
1999/10/13 19 560 EKI N22E25
1999/10/14 26 520 FKO N23E15
1999/10/15 21 330 EKO N22E00
1999/10/16 20 310 EAO N22W13
1999/10/17 29 290 EAO N23W26
1999/10/18 10 220 EAO N23W40
1999/10/19 2 170 CSO N22W59
1999/10/20 3 130 DAO N24W70
1999/10/21 3 110 CAO N24W83
1999/10/22 1 80 HAX N22W94
C
2

The top 2 solar flares from sunspot region 8728

Start Maximum End
1C3.311999/10/1605:0505:1705:20
2C2.241999/10/1818:5218:5719:03

Latest news

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

100%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/11/06X2.3
Last M-flare2024/11/08M1.4
Last geomagnetic storm2024/10/12Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
October 2024166.4 +25
November 2024190.1 +23.7
Last 30 days162 +13.2

This day in history*

Solar flares
12004X1.28
22002M6.59
32015M5.66
42001M4.78
52001M4.47
DstG
11991-354G4
22004-214G4
31998-142G3
41975-110G2
51992-97G2
*since 1994

Social networks