27 July 2015
⇐20150726 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150728⇒

NOAA
3 Active Regions
12389
12390
12387

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E34N07
(-529",35") 		E42-E24
(18) 		0.9 -4.9 -1.5e33
2 E49S29
(-624",-507") 		E58-E39
(19) 		0.5 -3.0 -1.7e33
3 E17S20
(-255",-399") 		E20-E14
(6) 		0.1 -12.2 -5.1e32
4 W40S10
(600",-225") 		W37-W42
(5) 		0.1 4.1 2.4e32

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 27-Jul-2015 23:35 UT .