7 February 2018
⇐20180206 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180208⇒

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 W18N45
(209",753") 		E38-W47
(85) 		8.7 0.7 4.5e33
2 W28S70
(156",-877") 		E62-W82
(144) 		2.9 -1.3 -6.8e33
3 W31N15
(487",333") 		W24-W39
(15) 		0.6 1.0 2.5e32
4 E55S65
(-339",-849") 		E63-E44
(19) 		0.2 -0.7 -3.8e32

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 7-Feb-2018 20:30 UT .