23 February 2019
⇐20190222 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190224⇒

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 E28S22
(-427",-264") 		E55-W16
(71) 		9.6 -0.6 -1.8e21
2 E21S66
(-142",-837") 		E64-W71
(135) 		3.7 -1.1 -5.3e21
3 E21N61
(-171",897") 		E45-W34
(79) 		1.3 0.6 1.9e21
4 W25N59
(211",879") 		W07-W56
(49) 		0.4 0.4 4.2e20

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 23-Feb-2019 20:30 UT .