22 July 2020
20200721 Week Rotation Today Rotation Week 20200723

NOAA
1 Active Region

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E23S15
(-351",-321")
49
(7.2e04)
-0.4 3.0 2.1e21
2 W27N02
(433",-35")
W07-W42
(35)
3.1 -0.2 -1.2e20
3 E09N15
(-150",163")
E17-W08
(25)
2.8 0.2 6.6e19
4 W47N69
(244",862")
E27-W84
(111)
1.4 1.0 6.7e20
5 E27S55
(-248",-813")
E43-E07
(36)
1.2 -0.3 -1.3e20
6 E47N66
(-281",837")
E59-E38
(21)
1.0 1.3 5.3e20
7 W17S16
(262",-339")
W07-W25
(18)
0.4 1.0 7.1e19
8 E24S32
(-327",-569")
E30-E18
(12)
0.3 -0.8 -4.6e19
9 E30N36
(-383",501")
E39-E24
(15)
0.2 0.5 2.6e19
10 E39S15
(-579",-313")
E44-E35
(9)
0.1 -0.5 -1.2e19
11 W48S15
(681",-292")
W44-W51
(7)
0.1 -0.4 -1.2e19

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 22-Jul-2020 19:00 UT .