7 September 2020
20200906 Week Rotation Today Rotation Week 20200908

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Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E31N69
(-174",850")
E70-W94
(164)
2.8 1.3 1.3e21
2 E17S03
(-281",-169")
E29-E03
(26)
1.7 0.4 1.1e20
3 W04N21
(61",221")
E07-W12
(19)
1.5 -0.0 -1.2e19
4 E14S57
(-121",-859")
E39-W18
(57)
1.3 -0.7 -3.4e20
5 W27N08
(424",25")
W23-W30
(7)
0.1 -1.0 -1.2e19
6 W33S16
(501",-358")
W31-W36
(5)
0.1 -1.4 -1.8e19
7 W43N15
(634",162")
W41-W46
(5)
0.0 -1.3 -1.3e19
8 E16N22
(-249",251")
E18-E15
(3)
0.0 -1.7 -1.3e19
9 W10S21
(150",-451")
W08-W12
(4)
0.0 -1.1 -9.0e18
10 E46N24
(-630",313")
E49-E44
(5)
0.0 -1.1 -1.1e19
11 E41S45
(-441",-735")
E44-E38
(6)
0.0 -0.4 -5.7e18
12 W39S12
(586",-282")
W37-W41
(4)
0.0 -0.5 -4.1e18

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 7-Sep-2020 19:00 UT .