25 July 2015
⇐20150724 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150726⇒

NOAA
4 Active Regions
12386
12387
12389
12390

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W44N38
(514",537") 		W13-W69
(56) 		2.2 0.8 1.2e33
2 W52N59
(387",778") 		W30-W64
(34) 		1.2 0.3 8.1e32
3 W11S10
(172",-254") 		W02-W17
(15) 		0.9 4.5 9.5e32
4 W06N32
(81",431") 		W04-W07
(3) 		0.0 -1.1 -1.6e31

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-Jul-2015 23:35 UT .