2 April 2012
⇐20120401 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120403⇒

NOAA
6 Active Regions
11443
11445
11449
11450
11452
11453

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W14N39
(180",679") 		E05-W27
(32) 		2.6 1.5 2.1e33
2 E28S57
(-242",-753") 		E64-E13
(51) 		2.0 1.0 1.8e33
3 E08N17
(-121",386") 		E10-E04
(6) 		0.3 -6.4 -5.7e32
4 E07S27
(-105",-343") 		E10-E02
(8) 		0.3 14.3 9.0e32
5 W30S05
(483",9") 		W27-W33
(6) 		0.2 -0.9 -5.8e31

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 2-Apr-2012 23:00 UT .