22 July 2020
⇐20200721 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200723⇒

NOAA
1 Active Region
12767

Flare Forecast
Flare Prediction System
MM MotD

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 .