30 September 2012
⇐20120929 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20121001⇒

NOAA
7 Active Regions
11575
11577
11578
11579
11582
11583
11584

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W30N60
(238",776") 		E05-W46
(51) 		1.9 0.5 8.9e32
2 E44N59
(-346",772") 		E45-E27
(18) 		0.7 0.4 3.7e32
3 E28N06
(-450",-1") 		E34-E19
(15) 		0.6 1.0 1.7e32
4 E43N41
(-489",564") 		E53-E32
(21) 		0.4 0.5 1.4e32

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 30-Sep-2012 17:00 UT .