11 August 2017
⇐20170810 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170812⇒

NOAA
1 Active Region
12670

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 E48N36
(-573",492") 		E83-E19
(64) 		4.1 3.3 1.0e34
2 W29S19
(432",-390") 		W14-W46
(32) 		2.1 -1.3 -1.1e33
3 E20S64
(-142",-891") 		E47-W07
(54) 		0.7 -0.8 -1.8e33
4 W40N07
(607",37") 		W32-W48
(16) 		0.4 -1.6 -2.8e32

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 11-Aug-2017 23:30 UT .