19 March 2017
⇐20170318 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170320⇒

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 E15S23
(-226",-271") 		E31-W16
(47) 		10.4 1.4 3.5e33
2 W43N61
(322",876") 		W22-W58
(36) 		0.5 0.2 5.1e32
3 E20S83
(-40",-935") 		E85-W88
(173) 		0.3 -0.8 -1.5e33

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 19-Mar-2017 20:30 UT .