17 October 2018
⇐20181016 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181018⇒

NOAA
2 Active Regions
12724
12725

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 E20N61
(-160",793") 		E41-W80
(121) 		4.6 1.0 4.4e21
2 W13S67
(85",-918") 		E16-W31
(47) 		0.5 -1.0 -1.6e21
3 E46S30
(-597",-537") 		E54-E37
(17) 		0.3 -0.8 -2.5e20
4 E30S69
(-174",-924") 		E48-E12
(36) 		0.2 -0.8 -8.3e20
5 E45S03
(-680",-114") 		E49-E41
(8) 		0.1 -1.1 -7.8e19
6 E51S15
(-723",-309") 		E55-E46
(9) 		0.1 -1.5 -1.4e20

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 17-Oct-2018 23:10 UT .