23 March 2017
⇐20170322 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170324⇒

NOAA
1 Active Region
12643

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 E35S28
(-495",-363") 		E67-E16
(51) 		6.5 -1.9 -5.1e33
2 W47S15
(675",-174") 		W27-W72
(45) 		5.3 1.3 3.8e33
3 E68S62
(-420",-824") 		E87-E57
(30) 		0.2 -0.7 -5.4e32

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 23-Mar-2017 20:30 UT .