4 March 2012
⇐20120303 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120305⇒

NOAA
5 Active Regions
11423
11427
11428
11429
11430

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E30S46
(-337",-617") 		E44-W10
(54) 		5.8 3.1 9.9e33
2 W30S29
(421",-376") 		W21-W42
(21) 		0.9 -1.8 -5.9e32
3 W13N33
(183",621") 		W05-W19
(14) 		0.4 2.2 4.4e32
4 W11S29
(164",-361") 		W07-W16
(9) 		0.2 -5.4 -2.5e32
5 W51S23
(697",-301") 		W44-W56
(12) 		0.2 -1.5 -1.8e32
6 W09S03
(146",66") 		W07-W11
(4) 		0.1 -3.0 -5.5e31

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 4-Mar-2012 22:00 UT .