17 April 2020
20200416 Week Rotation Today Rotation Week 20200418

NOAA
0 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W01S11
(8",-94")
E20-W28
(48)
8.3 0.1 1.3e20
2 E10S61
(-81",-790")
E74-W83
(157)
6.3 -1.0 -5.6e21
3 E27N04
(-440",149")
E36-E18
(18)
1.6 -0.1 -4.0e19
4 E05N67
(-33",909")
E46-W38
(84)
0.8 0.7 1.9e21
5 W32S41
(380",-570")
W24-W38
(14)
0.3 -0.5 -7.4e19
6 W25S32
(340",-441")
W21-W28
(7)
0.3 -0.6 -6.0e19
7 W16N27
(232",509")
W14-W18
(4)
0.1 -0.8 -1.9e19
8 W32N35
(415",609")
W30-W33
(3)
0.1 1.5 5.7e19
9 W39S20
(568",-262")
W38-W41
(3)
0.1 -1.1 -2.5e19
10 W07S17
(112",-186")
W04-W08
(4)
0.0 -1.0 -9.6e18
11 W42S12
(625",-136")
W39-W44
(5)
0.0 -1.5 -3.1e19

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/TCDSolar/CHIMERA.

The operations of the CHIMERA algorithm is described in a peer reviewed paper: arxiv.org/abs/1711.11476.

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, and the region positions are valid on 17-Apr-2020 19:30 UT .