6 February 2018
⇐20180205 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180207⇒

NOAA
3 Active Regions
12699
12697
12698

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 W14N46
(161",773") 		E40-W51
(91) 		7.9 0.8 5.4e33
2 W21S70
(115",-878") 		E73-W80
(153) 		3.0 -1.5 -7.5e33
3 E17N27
(-256",530") 		E25-E06
(19) 		1.4 -0.1 -5.7e31
4 W28S26
(407",-340") 		W20-W35
(15) 		0.5 -1.1 -1.7e32

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-Feb-2018 20:30 UT .