25 April 2014
⇐20140424 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140426⇒

NOAA
5 Active Regions
12038
12042
12044
12045
12046

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E12N48
(-135",759") 		E39-W27
(66) 		4.9 0.2 6.1e32
2 W12S10
(200",-91") 		W05-W18
(13) 		0.8 11.5 1.8e33
3 E39S63
(-273",-817") 		E61-E21
(40) 		0.7 -0.3 -3.3e32
4 W56S59
(405",-796") 		W38-W60
(22) 		0.7 -0.3 -5.8e32
5 W36N59
(288",848") 		W30-W44
(14) 		0.0 -1.2 -1.2e32

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 25-Apr-2014 23:35 UT .