22 July 2012
⇐20120721 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120723⇒

NOAA
4 Active Regions
11523
11524
11525
11526

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E21N51
(-217",686") 		E38-E01
(37) 		2.0 0.9 1.2e33
2 W25S27
(357",-489") 		W10-W36
(26) 		1.5 4.8 3.2e33
3 W20N51
(200",685") 		W00-W33
(33) 		1.1 0.5 3.4e32
4 E61N06
(-822",63") 		E72-E48
(24) 		0.9 -1.0 -1.1e33

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-Jul-2012 23:00 UT .