4 January 2016
⇐20160103 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160105⇒

NOAA
3 Active Regions
12476
12477
12478

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 W32N44
(372",716") 		E40-W73
(113) 		12.4 0.9 9.3e33
2 W04S16
(69",-214") 		E12-W20
(32) 		3.8 5.2 3.9e33
3 W56S73
(234",-924") 		W52-W66
(14) 		0.2 -0.9 -8.7e32
4 W57S66
(331",-879") 		W49-W56
(7) 		0.0 -1.9 -3.2e32

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 4-Jan-2016 21:35 UT .