22 April 2019
⇐20190421 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190423⇒

NOAA
1 Active Region
12739

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 W27S29
(375",-399") 		E05-W49
(54) 		6.7 -0.4 -9.7e20
2 E21N14
(-330",310") 		E36-W00
(36) 		3.0 -0.3 -2.4e20
3 W25S69
(140",-864") 		E47-W59
(106) 		1.9 -1.2 -4.2e21
4 W09S12
(141",-126") 		E05-W15
(20) 		1.5 -0.1 -2.8e19
5 E10N66
(-71",901") 		E59-W48
(107) 		1.1 0.9 2.8e21
6 E54S67
(-300",-856") 		E80-E65
(15) 		0.3 -0.7 -6.0e20
7 E20S23
(-306",-293") 		E23-E17
(6) 		0.1 -1.0 -2.6e19
8 E02N29
(-31",533") 		E04-W02
(6) 		0.1 -0.8 -2.0e19

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-Apr-2019 22:00 UT .