24 January 2012
⇐20120123 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120125⇒

NOAA
6 Active Regions
11401
11402
11405
11407
11408
11409

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E26S48
(-290",-664") 		E56-W15
(71) 		12.5 1.5 1.1e34
2 E27N45
(-309",744") 		E62-W18
(80) 		3.1 1.5 4.2e33
3 W20S15
(315",-174") 		W14-W23
(9) 		0.4 2.4 2.5e32

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 24-Jan-2012 22:00 UT .