17 September 2018
⇐20180916 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180918⇒

NOAA
1 Active Region
12722

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 E33N54
(-309",710") 		E88-W00
(88) 		4.6 0.9 3.2e21
2 W35S19
(519",-403") 		W15-W47
(32) 		2.8 -0.9 -1.3e21
3 E05S56
(-49",-852") 		E43-W24
(67) 		2.0 -0.6 -1.6e21
4 W08S28
(120",-544") 		W01-W14
(13) 		0.5 -0.6 -9.8e19
5 E52S07
(-744",-190") 		E57-E48
(9) 		0.1 -0.9 -9.3e19
6 W23S28
(323",-546") 		W20-W27
(7) 		0.1 -0.6 -3.1e19

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-Sep-2018 23:10 UT .