28 October 2017
⇐20171027 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171029⇒

NOAA
2 Active Regions
12685
12686

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 E17S29
(-249",-535") 		31
(1.5e05) 		-1.6 5.3 7.8e33
2 W22N73
(109",898") 		E76-W61
(137) 		1.6 0.8 3.3e33
3 E29S61
(-222",-879") 		E56-E12
(44) 		0.9 -0.9 -1.9e33

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 28-Oct-2017 23:30 UT .