18 July 2015
⇐20150717 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150719⇒

NOAA
4 Active Regions
12384
12386
12387
12388

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E27N55
(-249",735") 		E51-E00
(51) 		2.5 0.4 9.0e32
2 E46N33
(-567",476") 		E76-E26
(50) 		1.6 1.7 1.9e33
3 W06S13
(104",-280") 		E10-W16
(26) 		0.8 2.7 4.7e32
4 W21N12
(333",127") 		W14-W27
(13) 		0.6 8.8 1.2e33
5 E20S72
(-99",-916") 		E38-E10
(28) 		0.1 -1.8 -1.1e33

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 18-Jul-2015 23:35 UT .