4 December 2017
⇐20171203 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171205⇒

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 W18N52
(185",768") 		E70-W52
(122) 		7.1 1.0 5.7e33
2 W15S70
(90",-916") 		E37-W46
(83) 		0.8 -1.5 -3.2e33
3 E48N20
(-678",327") 		E53-E41
(12) 		0.2 3.2 3.9e32
4 W26S30
(369",-492") 		W23-W30
(7) 		0.1 -0.8 -3.7e31
5 E18S32
(-260",-525") 		E20-E16
(4) 		0.0 -1.4 -2.4e31
6 W39S05
(609",-95") 		W37-W41
(4) 		0.0 1.6 2.5e31

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 4-Dec-2017 20:30 UT .