18 February 2020
⇐20200217 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200219⇒

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 W07N08
(121",246") 		E29-W40
(69) 		8.8 -0.1 -1.8e20
2 W14S63
(109",-810") 		E81-W58
(139) 		5.6 -1.1 -5.8e21
3 W11N18
(172",409") 		W08-W13
(5) 		0.2 -0.8 -3.6e19
4 W32N17
(494",373") 		W31-W33
(2) 		0.1 -0.9 -2.2e19
5 W20S40
(261",-533") 		W17-W24
(7) 		0.1 -1.0 -2.4e19
6 W14S30
(205",-388") 		W12-W17
(5) 		0.1 -1.3 -1.9e19

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 18-Feb-2020 20:30 UT .