21 August 2016
⇐20160820 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160822⇒

NOAA
2 Active Regions
12578
12576

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 E06S23
(-90",-477") 		E32-W26
(58) 		6.8 -0.5 -1.0e33
2 E10N61
(-80",772") 		E88-W81
(169) 		3.6 0.7 2.2e33
3 W38S66
(243",-894") 		E28-W57
(85) 		0.8 -1.1 -6.5e33
4 W18S05
(291",-183") 		W15-W22
(7) 		0.1 -4.8 -1.6e32
5 W31S05
(495",-181") 		W28-W34
(6) 		0.1 -2.4 -9.6e31
6 W11S02
(175",-150") 		W10-W12
(2) 		0.1 -3.2 -4.4e31
7 W22S21
(338",-434") 		W19-W25
(6) 		0.0 -2.8 -4.9e31

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 21-Aug-2016 23:31 UT .