3 October 2017
⇐20171002 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171004⇒

NOAA
3 Active Regions
12682
12683
12681

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 W16S23
(250",-464") 		E01-W24
(25) 		3.2 -1.7 -1.8e33
2 W11N75
(48",894") 		E90-W90
(180) 		1.7 0.9 3.4e33
3 W09S67
(61",-919") 		E25-W30
(55) 		0.6 -0.8 -1.7e33
4 E68N32
(-760",464") 		E83-E57
(26) 		0.5 2.0 2.0e33
5 W28S06
(453",-204") 		W25-W31
(6) 		0.1 -6.9 -2.8e32

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 3-Oct-2017 23:30 UT .