22 August 2019
⇐20190821 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190823⇒

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 W23N73
(108",869") 		E87-W64
(151) 		2.3 1.4 1.2e21
2 W20N27
(285",325") 		E05-W33
(38) 		1.8 -0.3 -8.7e19
3 E29N09
(-455",43") 		7
(3.4e03) 		-4.5 2.6 8.9e19
4 W38N20
(546",242") 		W34-W40
(6) 		0.1 -0.6 -1.3e19

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 22-Aug-2019 23:40 UT .