31 October 2018
⇐20181030 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181101⇒

NOAA
Active Regions
No Data

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 E21N13
(-345",148") 		E41-W04
(45) 		7.3 1.4 2.5e21
2 W03N72
(18",892") 		E72-W85
(157) 		2.2 1.2 5.4e21
3 W48S05
(718",-142") 		W42-W55
(13) 		0.3 -1.8 -3.5e20
4 E33N17
(-499",224") 		E36-E27
(9) 		0.2 -0.8 -6.5e19
5 W45N04
(687",12") 		W42-W49
(7) 		0.1 -0.8 -5.7e19
6 E47S13
(-690",-269") 		E51-E43
(8) 		0.1 -0.8 -5.9e19
7 E41S22
(-586",-411") 		E44-E38
(6) 		0.0 -1.2 -2.5e19

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 some time.