19 September 2018
⇐20180918 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180920⇒

NOAA
1 Active Region
12722

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 E25N58
(-212",753") 		E89-W12
(101) 		4.7 1.1 4.2e21
2 E26S06
(-411",-200") 		E36-E15
(21) 		1.7 -0.5 -2.6e20
3 W05S58
(48",-869") 		E43-W38
(81) 		1.4 -0.3 -7.2e20
4 W31S48
(325",-774") 		W23-W43
(20) 		0.3 -0.7 -3.2e20
5 W48S21
(669",-406") 		W44-W56
(12) 		0.3 -0.7 -1.6e20
6 W11S29
(154",-568") 		W07-W12
(5) 		0.0 -0.7 -1.4e19

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 19-Sep-2018 23:10 UT .