30 January 2012
⇐20120129 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120131⇒

NOAA
5 Active Regions
11408
11410
11411
11412
11413

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W54S62
(372",-829") 		E80-W76
(156) 		3.6 0.6 5.4e33
2 W36N42
(426",707") 		W25-W63
(38) 		1.1 0.7 8.4e32
3 E22N02
(-365",133") 		E30-E09
(21) 		1.0 -11.1 -2.8e33
4 E43S18
(-636",-225") 		E55-E32
(23) 		0.8 -0.8 -3.3e32

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 30-Jan-2012 16:00 UT .