20 February 2020
⇐20200219 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200221⇒

NOAA
0 Active Regions

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 W18N18
(288",403") 		E04-W33
(37) 		5.1 -0.2 -2.8e20
2 W12S67
(75",-846") 		E78-W83
(161) 		4.6 -1.0 -5.7e21
3 E12N18
(-189",406") 		E18-E01
(17) 		1.9 -0.2 -1.0e20
4 E19S23
(-297",-270") 		23
(4.5e04) 		-0.1 4.9 2.2e21
5 E02N63
(-15",915") 		E43-W17
(60) 		0.8 0.8 1.6e21
6 E46N21
(-652",427") 		E48-E45
(3) 		0.0 -1.2 -3.3e19

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 20-Feb-2020 20:30 UT .