31 December 2015
⇐20151230 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160101⇒

NOAA
3 Active Regions
12472
12473
12475

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 E07N43
(-91",698") 		E69-W59
(128) 		16.6 1.1 9.9e33
2 E52S15
(-742",-224") 		E65-E31
(34) 		1.7 4.8 6.1e33
3 W10S72
(51",-910") 		E67-W68
(135) 		1.4 -1.0 -3.5e33

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 31-Dec-2015 21:35 UT .