10 February 2017
⇐20170209 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170211⇒

NOAA
3 Active Regions
12635
12630
12634

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E09N42
(-111",729") 		E42-W39
(81) 		8.3 0.6 3.0e33
2 W32S68
(188",-864") 		E85-W72
(157) 		3.3 -1.3 -7.3e33
3 E35S13
(-549",-129") 		E43-E30
(13) 		0.5 2.1 4.1e32
4 E06S43
(-72",-574") 		E10-W02
(12) 		0.2 -0.8 -6.9e31
5 W09S20
(144",-222") 		W05-W12
(7) 		0.1 -1.8 -4.0e31
6 E70S23
(-840",-348") 		E78-E63
(15) 		0.1 3.4 5.8e32
7 W00N32
(1",606") 		E02-W03
(5) 		0.1 -2.4 -6.6e31

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 10-Feb-2017 20:30 UT .