17 February 2018
⇐20180216 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180218⇒

NOAA
1 Active Region
12699

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 W06S34
(82",-449") 		E48-W67
(115) 		11.5 -0.7 -2.5e33
2 E20N10
(-332",276") 		E37-E01
(36) 		3.5 0.5 4.7e32
3 E38N32
(-505",595") 		E48-E31
(17) 		0.5 0.4 1.7e32

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 17-Feb-2018 20:30 UT .