21 January 2019
⇐20190120 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190122⇒

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 W17N15
(277",334") 		E21-W37
(58) 		5.7 0.9 1.4e21
2 E08S73
(-37",-906") 		E80-W83
(163) 		1.8 -1.1 -4.2e21
3 E22N63
(-162",905") 		E64-W49
(113) 		1.5 0.8 3.2e21
4 E08S17
(-131",-201") 		E19-W09
(28) 		1.4 0.0 1.4e19
5 W22S33
(312",-457") 		W19-W26
(7) 		0.1 -0.6 -3.1e19
6 W21N34
(287",615") 		W19-W22
(3) 		0.0 -0.8 -1.9e19

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 21-Jan-2019 20:30 UT .