24 April 2018
⇐20180423 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180425⇒

NOAA
2 Active Regions
12706
12707

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 W13N50
(136",778") 		E65-W47
(112) 		5.4 0.6 3.1e33
2 E11S65
(-80",-828") 		E71-W59
(130) 		4.8 -1.1 -6.6e33
3 W13S30
(185",-413") 		E07-W23
(30) 		1.5 0.0 1.2e31
4 E43N10
(-645",226") 		E46-E41
(5) 		0.1 -0.7 -2.2e31
5 W19S14
(297",-150") 		W17-W22
(5) 		0.1 -2.9 -3.4e31

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 24-Apr-2018 15:30 UT .