25 August 2015
⇐20150824 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150826⇒

NOAA
2 Active Regions
12403
12404

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E25S35
(-326",-624") 		E40-W01
(41) 		3.4 -2.8 -5.6e33
2 E09N07
(-156",3") 		E17-E04
(13) 		1.5 -5.6 -1.5e33
3 W60S08
(812",-190") 		W49-W71
(22) 		0.8 2.0 2.1e33

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-2015 23:35 UT .