30 September 2017
⇐20170929 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171001⇒

NOAA
3 Active Regions
12681
12682
12683

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 W26N67
(167",837") 		E73-W48
(121) 		3.7 0.8 4.0e33
2 E27S21
(-403",-434") 		E41-E15
(26) 		2.5 -1.4 -1.4e33
3 E05N04
(-76",-51") 		E07-E01
(6) 		0.2 -4.2 -1.8e32

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-Sep-2017 23:30 UT .