11 December 2017
⇐20171210 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171212⇒

NOAA
2 Active Regions
12691
12690

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 W18N57
(158",826") 		E61-W53
(114) 		6.3 0.6 3.9e33
2 W05S22
(73",-358") 		E16-W15
(31) 		3.2 -0.8 -5.9e32
3 E34N16
(-529",282") 		E58-E18
(40) 		3.1 1.2 1.5e33
4 E29S66
(-189",-889") 		E57-W11
(68) 		1.1 -1.2 -3.2e33
5 E20S05
(-340",-76") 		E23-E18
(5) 		0.1 1.7 3.8e31
6 E12S32
(-170",-510") 		E13-E09
(4) 		0.0 -2.4 -3.8e31

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 11-Dec-2017 20:30 UT .