11 April 2012
⇐20120410 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120412⇒

NOAA
3 Active Regions
11452
11454
11455

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W21N04
(346",165") 		W07-W43
(36) 		4.9 -4.3 -5.3e33
2 W23S31
(320",-415") 		W11-W35
(24) 		1.9 -1.7 -1.1e33
3 W22N40
(269",685") 		W16-W31
(15) 		0.5 -1.5 -4.8e32
4 E13S05
(-220",5") 		E19-E06
(13) 		0.3 -1.7 -1.1e32
5 W13N25
(195",497") 		W09-W18
(9) 		0.2 -11.1 -8.5e32
6 W16N50
(174",794") 		W13-W19
(6) 		0.1 -0.9 -7.6e31
7 E26S25
(-379",-328") 		E28-E24
(4) 		0.0 -5.2 -8.1e31

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 11-Apr-2012 23:00 UT .