5 April 2021
⇐20210404 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210406⇒

NOAA
1 Active Region
12813

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 E03N12
(-52",298") 		E32-W30
(62) 		10.5 0.2 4.1e20
2 W38S27
(530",-358") 		W28-W47
(19) 		1.1 1.1 2.4e20
3 E64S72
(-261",-895") 		E74-E39
(35) 		0.4 -1.2 -2.8e20
4 E19S28
(-270",-363") 		E24-E11
(13) 		0.4 -1.6 -9.5e19
5 E29S37
(-375",-499") 		E34-E26
(8) 		0.2 -1.6 -6.4e19
6 W29N18
(450",381") 		W25-W34
(9) 		0.1 -0.8 -1.9e19
7 E15S79
(-44",-919") 		E41-W03
(44) 		0.1 -1.8 -1.2e20
8 E29N07
(-459",208") 		E33-E24
(9) 		0.1 0.9 2.1e19
9 W28S14
(439",-147") 		W25-W31
(6) 		0.1 3.0 5.7e19
10 W29S35
(387",-466") 		W28-W31
(3) 		0.1 -0.6 -7.7e18
11 W20S15
(322",-157") 		W19-W22
(3) 		0.1 -0.9 -7.8e18
12 E40S70
(-211",-868") 		E44-E28
(16) 		0.0 -2.9 -5.2e19
13 E18S39
(-226",-518") 		E19-E16
(3) 		0.0 -1.9 -1.3e19

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 5-Apr-2021 19:30 UT .