22 November 2017
⇐20171121 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171123⇒

NOAA
2 Active Regions
12687
12688

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 W10N67
(66",882") 		E50-W70
(120) 		2.4 0.9 3.8e33
2 E28N11
(-447",152") 		E33-E19
(14) 		0.5 -1.4 -2.2e32
3 W14N51
(151",733") 		W05-W22
(17) 		0.4 0.8 1.9e32
4 E12N08
(-193",100") 		E13-E10
(3) 		0.0 -2.1 -1.4e31

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 22-Nov-2017 20:30 UT .