19 December 2017
⇐20171218 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171220⇒

NOAA
0 Active Regions

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 E22N12
(-361",226") 		E30-E08
(22) 		1.0 -3.3 -9.4e32
2 W27S07
(443",-103") 		W15-W33
(18) 		0.5 -3.0 -4.6e32
3 E42S06
(-649",-79") 		E52-E34
(18) 		0.5 -1.1 -2.5e32
4 E26N70
(-144",926") 		E49-E05
(44) 		0.4 0.7 1.1e33
5 W24S72
(121",-922") 		W07-W54
(47) 		0.4 -0.5 -6.6e32
6 E35S01
(-562",1") 		E40-E31
(9) 		0.1 -2.1 -8.1e31

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 19-Dec-2017 20:30 UT .