25 August 2017
⇐20170824 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170826⇒

NOAA
2 Active Regions
12671
12672

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 E20N74
(-90",873") 		E90-W59
(149) 		1.9 0.8 3.1e33
2 W05S12
(82",-307") 		E07-W15
(22) 		1.4 -1.1 -3.3e32
3 E20S61
(-159",-877") 		E52-W06
(58) 		1.0 -0.5 -1.2e33
4 E62N26
(-760",359") 		E71-E46
(25) 		0.9 0.8 1.0e33
5 W30S62
(223",-879") 		W24-W51
(27) 		0.3 -0.7 -7.8e32

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 25-Aug-2017 19:30 UT .