22 February 2018
⇐20180221 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180223⇒

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 W05S51
(49",-671") 		E76-W56
(132) 		14.9 -0.8 -5.7e33
2 W33S14
(517",-132") 		W18-W48
(30) 		1.7 0.2 9.9e31
3 E29N50
(-296",810") 		E36-E15
(21) 		1.3 0.6 1.1e33
4 E12N65
(-85",925") 		E37-W17
(54) 		0.4 0.8 1.3e33

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 22-Feb-2018 20:36 UT .