27 January 2012
⇐20120126 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120128⇒

NOAA
4 Active Regions
11402
11405
11408
11410

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W25S53
(245",-727") 		E84-W50
(134) 		9.8 0.9 6.2e33
2 E07N42
(-84",723") 		E31-W45
(76) 		4.5 1.3 3.5e33

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 27-Jan-2012 14:00 UT .