31 January 2019
20190130 Week Rotation Today Rotation Week 20190201

NOAA
1 Active Region

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W26S14
(411",-143")
E20-W65
(85)
14.5 -0.5 -1.9e21
2 E12S72
(-65",-889")
E75-W85
(160)
2.3 -0.9 -3.7e21
3 E32N05
(-515",166")
E42-E25
(17)
0.8 -0.8 -2.0e20
4 W54S68
(295",-877")
W44-W69
(25)
0.1 -1.4 -2.6e20

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 31-Jan-2019 20:30 UT .