21 December 2018
20181220 Week Rotation Today Rotation Week 20181222

NOAA
1 Active Region

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E43N11
(-651",201")
E62-E27
(35)
1.8 1.5 1.3e21
2 E28S66
(-183",-883")
E65-W07
(72)
1.5 -1.1 -3.3e21
3 W09N67
(60",909")
E68-W63
(131)
1.5 0.9 3.1e21
4 W13N11
(219",210")
W04-W21
(17)
0.9 -1.1 -2.1e20
5 W57S69
(297",-903")
W39-W66
(27)
0.1 -1.2 -8.0e20
6 W24N54
(236",808")
W21-W28
(7)
0.0 -1.0 -4.9e19

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/solarmonitor/solarmonitoridl/idl. An extensive copy of coronal hole properties are available at: solarmonitor.org/data. The latest positions of the coronal holes are given in heliocentric co-ordinates. The region positions are valid on 21-Dec-2018 20:30 UT .