26 April 2020
⇐20200425 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200427⇒

NOAA
1 Active Region
12760

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 W17S10
(270",-99") 		E18-W42
(60) 		12.3 0.1 2.3e20
2 W06S68
(40",-853") 		E69-W74
(143) 		3.4 -1.1 -5.3e21
3 W52S55
(431",-752") 		W51-W60
(9) 		0.1 -1.9 -1.9e20

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-Apr-2020 19:30 UT .