23 May 2018
⇐20180522 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180524⇒

NOAA
1 Active Region
12710

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 E18N48
(-196",727") 		E36-W45
(81) 		6.9 0.5 2.4e33
2 E12S66
(-80",-855") 		E64-W75
(139) 		3.3 -0.9 -4.6e33

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-May-2018 15:30 UT .