26 October 2017
⇐20171025 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171027⇒

NOAA
2 Active Regions
12685
12686

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 W22N67
(141",859") 		E78-W56
(134) 		3.6 1.0 5.7e33
2 E48S16
(-687",-319") 		E56-E39
(17) 		0.7 -1.1 -5.2e32
3 W27S72
(139",-936") 		W17-W45
(28) 		0.1 -1.5 -9.3e32

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 26-Oct-2017 23:30 UT .