15 April 2018
⇐20180414 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180416⇒

NOAA
1 Active Region
12704

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 E13S25
(-194",-316") 		E41-W35
(76) 		12.8 -0.4 -1.3e33
2 E45S68
(-252",-859") 		E54-W80
(134) 		1.5 -0.9 -3.2e33

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 15-Apr-2018 23:30 UT .