21 September 2018
⇐20180920 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180922⇒

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 E18S13
(-282",-326") 		E40-W17
(57) 		4.7 -0.3 -3.7e20
2 E01N66
(-9",822") 		E57-W34
(91) 		4.6 1.1 5.4e21
3 E33S22
(-479",-454") 		E40-E27
(13) 		0.5 -0.8 -1.9e20
4 W39S59
(312",-861") 		W27-W43
(16) 		0.2 -0.5 -4.1e20
5 W14S67
(85",-920") 		20
(5.8e04) 		-1.1 4.6 2.7e21
6 W31S05
(497",-180") 		W29-W33
(4) 		0.1 -1.7 -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 21-Sep-2018 23:10 UT .