26 May 2017
⇐20170525 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170527⇒

NOAA
4 Active Regions
12659
12656
12658
12660

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 -465
(-267",306") 		2.2e05
(8.1) 		5.5 -6.0 -1.3e34
2 -481
(-185",-815") 		6.1e05
(4.7) 		5.9 -6.4 -3.9e34
3 -412
(-79",865") 		4.8e05
(2.6) 		6.8 -5.9 -2.8e34
4 468
(525",444") 		2.6e04
(0.5) 		12.1 -5.5 -1.4e33
5 -456
(-412",-422") 		4.7e03
(0.1) 		5.9 -6.5 -3.1e32

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-May-2017 23:30 UT .