18 October 2019
⇐20191017 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191019⇒

NOAA
0 Active Regions

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 W21S27
(313",-516") 		W02-W30
(28) 		3.9 -1.0 -7.9e20
2 E44N16
(-640",199") 		E63-E25
(38) 		3.3 0.9 6.6e20
3 W39N70
(204",879") 		E77-W82
(159) 		2.1 1.2 1.1e21
4 W17S59
(148",-869") 		E49-W38
(87) 		2.0 -0.7 -5.2e20
5 E46N61
(-332",809") 		E50-E42
(8) 		0.2 0.4 3.1e19
6 W30N18
(462",226") 		W27-W34
(7) 		0.1 -0.8 -1.1e19

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 18-Oct-2019 23:40 UT .