26 April 2015
⇐20150425 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150427⇒

NOAA
7 Active Regions
12324
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 E50N41
(-555",658") 		E67-E44
(23) 		2.2 1.1 4.0e33
2 W22S71
(115",-876") 		E46-W83
(129) 		1.6 -1.1 -3.5e33
3 E23S09
(-373",-72") 		E34-E12
(22) 		1.1 9.1 2.6e33
4 E59N16
(-789",298") 		E68-E53
(15) 		0.1 -2.8 -4.9e32

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-2015 23:35 UT .