27 April 2015
⇐20150426 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150428⇒

NOAA
6 Active Regions
12325
12327
12331
12333
12330
12332

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E36N42
(-419",682") 		E58-E20
(38) 		4.0 1.3 4.8e33
2 E11S09
(-178",-68") 		E20-W00
(20) 		1.3 9.4 2.3e33
3 W33S72
(158",-886") 		E34-W79
(113) 		1.3 -0.7 -2.3e33
4 E45N18
(-642",340") 		E50-E37
(13) 		0.3 -4.5 -9.8e32
5 E06N20
(-91",394") 		E07-E03
(4) 		0.1 -22.8 -7.1e32
6 E13N12
(-207",277") 		E15-E10
(5) 		0.1 7.7 1.8e32
7 E57S76
(-199",-910") 		E79-E34
(45) 		0.1 -1.9 -9.3e32

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 27-Apr-2015 23:35 UT .