6 April 2017
⇐20170405 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170407⇒

NOAA
4 Active Regions
12645
12648
12647
12649

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 W17S63
(124",-808") 		E46-W84
(130) 		6.4 -1.3 -8.7e33
2 W04N59
(36",871") 		E58-W60
(118) 		1.9 0.4 1.2e33
3 W23S29
(322",-380") 		W03-W36
(33) 		1.9 -1.0 -6.2e32
4 E06N26
(-85",516") 		E12-W05
(17) 		1.9 1.0 6.5e32
5 W15N33
(205",598") 		W06-W20
(14) 		0.4 0.5 8.6e31
6 W05N03
(81",161") 		W00-W08
(8) 		0.3 1.7 8.0e31
7 W39S04
(610",15") 		W37-W41
(4) 		0.0 3.1 5.0e31

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 6-Apr-2017 19:30 UT .