27 March 2017
⇐20170326 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170328⇒

NOAA
2 Active Regions
12644
12643

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 -634
(-607",W00S46") 		108
(7.0e05) 		-1.2 5.1 3.6e34
2 E24S26
(-354",-334") 		E28-E19
(9) 		0.2 0.7 3.8e31

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 27-Mar-2017 19:30 UT .