25 March 2012
⇐20120324 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120326⇒

NOAA
6 Active Regions
11438
11440
11443
11444
11445
11446

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E28S62
(-209",-801") 		E55-W39
(94) 		3.2 0.7 2.6e33
2 W10N02
(159",142") 		E06-W18
(24) 		1.2 -2.6 -6.1e32
3 W38N42
(438",709") 		W29-W49
(20) 		0.4 2.7 1.4e33
4 W22S19
(343",-211") 		W17-W29
(12) 		0.3 -5.2 -3.7e32
5 E28N04
(-453",168") 		E30-E26
(4) 		0.2 -1.0 -4.9e31
6 E09N17
(-151",384") 		E13-E06
(7) 		0.1 -12.4 -4.6e32

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 25-Mar-2012 23:00 UT .