29 December 2017
⇐20171228 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171230⇒

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 E07N48
(-75",754") 		E64-W24
(88) 		7.9 0.7 4.0e33
2 W11S66
(77",-873") 		E73-W58
(131) 		2.9 -1.1 -4.9e33
3 W25N23
(388",416") 		W22-W29
(7) 		0.3 1.9 2.0e32
4 W19S35
(264",-523") 		W16-W20
(4) 		0.1 -1.0 -4.6e31
5 E30S12
(-472",-159") 		E32-E27
(5) 		0.1 -0.9 -3.3e31

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 29-Dec-2017 20:30 UT .