26 July 2017
⇐20170725 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170727⇒

NOAA
1 Active Region
12668

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 -620
(-454",-250") 		1.1e05
(3.1) 		5.9 -6.7 -7.0e33
2 -484
(-144",858") 		4.5e05
(2.3) 		6.4 -5.6 -2.5e34
3 -379
(-119",-888") 		3.7e05
(1.2) 		5.6 -6.6 -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 26-Jul-2017 23:30 UT .