3 August 2018
⇐20180802 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180804⇒

NOAA
1 Active Region
12717

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 W05N67
(31",832") 		E83-W83
(166) 		4.2 1.0 5.2e21
2 W03N26
(51",324") 		E13-W15
(28) 		3.0 0.2 1.7e20
3 W37S21
(540",-405") 		W28-W48
(20) 		0.7 -0.7 -2.6e20
4 W38N05
(583",11") 		W32-W44
(12) 		0.4 -0.8 -1.4e20
5 E22N34
(-292",453") 		E24-E20
(4) 		0.0 -1.0 -1.7e19

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-Aug-2018 23:10 UT .