19 January 2018
⇐20180118 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180120⇒

NOAA
1 Active Region
12696

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 W27N10
(436",247") 		E06-W47
(53) 		4.8 -1.8 -2.7e33
2 E31S34
(-416",-482") 		E63-W01
(64) 		2.6 -1.6 -1.8e33
3 W33S76
(129",-924") 		E45-W70
(115) 		0.8 -1.3 -3.8e33

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-Jan-2018 20:30 UT .