23 November 2017
⇐20171122 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171124⇒

NOAA
1 Active Region
12687

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 W33N66
(210",880") 		E26-W53
(79) 		1.9 0.8 3.6e33
2 E44S35
(-554",-570") 		E58-E34
(24) 		0.9 -1.8 -1.5e33
3 E11N11
(-185",163") 		E17-E01
(16) 		0.9 -1.8 -3.4e32
4 E13S74
(-57",-944") 		E22-W06
(28) 		0.1 -0.7 -4.7e32

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 23-Nov-2017 20:30 UT .