21 July 2012
⇐20120720 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120722⇒

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 E32N52
(-312",698") 		E46-W05
(51) 		2.0 0.8 1.2e33
2 W13S27
(192",-502") 		E04-W23
(27) 		1.6 5.6 3.2e33
3 E05S45
(-57",-720") 		E08-W00
(8) 		0.1 -0.4 -3.9e31
4 E21S43
(-248",-693") 		E24-E18
(6) 		0.1 -1.1 -6.2e31
5 E04N35
(-54",470") 		E07-W01
(8) 		0.1 -0.9 -2.0e31

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 21-Jul-2012 23:00 UT .