2 October 2017
⇐20171001 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171003⇒

NOAA
3 Active Regions
12681
12682
12683

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 W02S21
(25",-452") 		E16-W13
(29) 		3.4 -1.5 -1.5e33
2 W13N75
(54",892") 		E74-W90
(164) 		1.8 0.6 2.3e33
3 E08S67
(-52",-919") 		E38-W32
(70) 		0.6 -1.2 -2.7e33
4 W17S07
(283",-216") 		W15-W20
(5) 		0.1 -6.1 -2.2e32
5 W25N03
(411",-54") 		W23-W28
(5) 		0.1 -4.4 -1.1e32

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 2-Oct-2017 23:30 UT .