25 January 2012
⇐20120124 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120126⇒

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 E06S51
(-59",-697") 		E69-W26
(95) 		11.6 1.0 6.1e33
2 E16N45
(-186",746") 		E49-W36
(85) 		3.7 1.1 3.0e33
3 W37S19
(556",-241") 		W32-W42
(10) 		0.3 1.4 1.8e32
4 W27S09
(438",-73") 		W25-W29
(4) 		0.1 -1.1 -2.6e31

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-Jan-2012 22:00 UT .