26 December 2015
⇐20151225 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20151227⇒

NOAA
4 Active Regions
12470
12472
12473
12475

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 E51N48
(-506",739") 		E70-W13
(83) 		7.4 0.8 1.2e34
2 W49S67
(280",-891") 		E64-W66
(130) 		1.7 -1.0 -6.0e33

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 26-Dec-2015 21:35 UT .