25 July 2018
⇐20180724 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180726⇒

NOAA
1 Active Region
12716

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W19S28
(266",-518") 		E09-W37
(46) 		4.5 -0.7 -1.3e21
2 E15N63
(-110",804") 		E56-W85
(141) 		3.7 0.9 3.7e21
3 E12S60
(-100",-855") 		E49-W52
(101) 		2.3 -1.1 -4.2e21
4 W45S16
(649",-310") 		W37-W53
(16) 		0.4 -0.7 -2.1e20
5 W54S07
(759",-171") 		W45-W61
(16) 		0.4 -0.5 -1.4e20
6 E13N08
(-205",48") 		E16-E08
(8) 		0.1 -0.9 -1.6e19
7 W03N51
(29",676") 		E01-W06
(7) 		0.1 -1.1 -4.4e19
8 E37N06
(-564",36") 		E39-E34
(5) 		0.0 -1.4 -2.3e19

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-2018 23:10 UT .