19 January 2019
⇐20190118 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190120⇒

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 E19S04
(-323",19") 		E42-W16
(58) 		8.4 1.0 1.8e21
2 W25S70
(141",-889") 		E76-W76
(152) 		2.3 -1.1 -5.1e21
3 E39N62
(-287",892") 		E70-W06
(76) 		1.1 0.6 2.4e21
4 W21S20
(337",-252") 		W19-W24
(5) 		0.2 -0.9 -4.2e19

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 19-Jan-2019 20:30 UT .