26 April 2017
⇐20170425 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170427⇒

NOAA
3 Active Regions
12651
12652
12653

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 W37S49
(375",-681") 		E80-W79
(159) 		9.3 -0.8 -5.8e33
2 E32N62
(-238",867") 		E65-W01
(66) 		1.5 0.6 2.5e33
3 E11N15
(-183",325") 		E14-E09
(5) 		0.1 7.1 1.6e32
4 E24S54
(-231",-730") 		E27-E22
(5) 		0.1 -0.5 -2.8e31

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-Apr-2017 19:30 UT .