29 January 2018
⇐20180128 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180130⇒

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 W27S67
(178",-855") 		E82-W65
(147) 		4.0 -1.0 -6.0e33
2 E39N41
(-464",694") 		E74-E14
(60) 		2.5 0.7 1.8e33
3 W21N60
(178",885") 		79
(3.1e05) 		0.6 6.0 1.9e34
4 W44S21
(639",-275") 		W38-W50
(12) 		0.3 -1.1 -1.6e32
5 W42S08
(642",-60") 		W37-W46
(9) 		0.1 -1.0 -5.9e31
6 W50S46
(516",-654") 		W47-W52
(5) 		0.0 -1.2 -4.3e31

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 29-Jan-2018 20:30 UT .