19 August 2019
⇐20190818 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190820⇒

NOAA
0 Active Regions

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 W11N11
(178",77") 		E07-W24
(31) 		3.4 -0.3 -1.4e20
2 W10N72
(51",860") 		E73-W66
(139) 		2.7 1.3 1.3e21
3 W22S58
(186",-858") 		E43-W63
(106) 		2.3 -0.9 -8.0e20
4 E16S09
(-253",-255") 		E22-E06
(16) 		1.7 -0.0 -3.2e18
5 W34S28
(468",-531") 		W20-W39
(19) 		1.1 -0.9 -2.1e20
6 W38N37
(462",496") 		W31-W44
(13) 		0.1 -0.5 -1.0e19
7 W13S07
(210",-219") 		W10-W16
(6) 		0.1 -1.2 -1.5e19
8 W30N30
(418",380") 		W29-W32
(3) 		0.1 -2.0 -2.4e19
9 E24S16
(-378",-364") 		E27-E22
(5) 		0.1 1.0 9.6e18
10 E18N20
(-279",225") 		E20-E17
(3) 		0.0 -0.8 -5.1e18

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 19-Aug-2019 23:40 UT .