24 July 2017
⇐20170723 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170725⇒

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 -448
(315",767") 		6.2e05
(4.9) 		6.0 -5.7 -3.6e34
2 -336
(-189",-888") 		3.7e05
(0.9) 		5.2 -7.0 -2.5e34

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-Jul-2017 23:30 UT .