30 December 2017
⇐20171229 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171231⇒

NOAA
1 Active Region
12692

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 W05N49
(57",765") 		E54-W36
(90) 		8.2 0.8 4.8e33
2 W01S68
(6",-884") 		E65-W67
(132) 		2.9 -1.0 -4.9e33
3 W21S26
(310",-392") 		W05-W36
(31) 		2.1 -0.1 -7.3e31
4 W31S34
(420",-517") 		W26-W34
(8) 		0.2 -0.6 -5.7e31
5 W44S25
(614",-384") 		W41-W47
(6) 		0.0 -2.0 -5.6e31

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 30-Dec-2017 20:30 UT .