30 October 2017
⇐20171029 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171031⇒

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 W17S30
(245",-541") 		E04-W29
(33) 		3.4 -2.3 -3.1e33
2 E16S63
(-126",-889") 		E59-W45
(104) 		1.9 -0.8 -3.1e33
3 E24N74
(-106",908") 		E79-W57
(136) 		1.2 0.8 2.8e33
4 E32S33
(-423",-586") 		E34-E25
(9) 		0.3 -0.5 -8.5e31

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 30-Oct-2017 20:30 UT .