12 January 2015
⇐20150111 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150113⇒

NOAA
7 Active Regions
12255
12257
12258
12259
12260
12261
12262

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W56N32
(685",550") 		W43-W65
(22) 		0.6 1.7 1.5e33
2 W33N06
(529",166") 		W27-W38
(11) 		0.1 4.9 2.2e32
3 W41N04
(637",117") 		W38-W44
(6) 		0.1 6.4 3.2e32
4 W42N39
(507",660") 		W38-W47
(9) 		0.1 2.5 2.1e32

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 12-Jan-2015 22:35 UT .