31 July 2015
⇐20150730 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150801⇒

NOAA
6 Active Regions
12389
12390
12391
12392
12393
12394

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W13S30
(186",-548") 		E02-W26
(28) 		1.7 -3.6 -2.5e33
2 E02S62
(-14",-876") 		E31-W37
(68) 		1.4 -1.0 -3.1e33
3 W22N05
(356",3") 		W14-W30
(16) 		0.8 -6.4 -1.2e33
4 W42S19
(596",-367") 		W38-W44
(6) 		0.1 -9.0 -5.8e32

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 31-Jul-2015 23:35 UT .