17 August 2015
⇐20150816 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150818⇒

NOAA
4 Active Regions
12400
12401
12398
12399

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E21N47
(-232",618") 		E43-W19
(62) 		9.7 1.5 7.2e33
2 E47S08
(-682",-208") 		E54-E37
(17) 		1.0 4.0 2.4e33
3 W52N64
(327",816") 		W30-W90
(60) 		0.4 0.4 3.0e32

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 17-Aug-2015 23:35 UT .