22 March 2015
⇐20150321 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150323⇒

NOAA
5 Active Regions
12303
12305
12306
12299
12304

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W09S73
(45",-879") 		E87-W88
(175) 		2.3 -0.7 -3.0e33
2 W20S18
(309",-195") 		W04-W29
(25) 		1.1 3.8 1.0e33
3 E03S06
(-54",18") 		E07-W02
(9) 		0.8 7.3 9.4e32

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 22-Mar-2015 22:35 UT .