4 January 2017
⇐20170103 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170105⇒

NOAA
2 Active Regions
12624
12623

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 W13S45
(156",-651") 		E79-W39
(118) 		17.8 -1.5 -1.3e34
5 E58S07
(-826",-88") 		E66-E50
(16) 		0.6 0.8 4.6e32
3 W49S10
(723",-133") 		W46-W52
(6) 		0.1 -3.6 -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-2017 20:30 UT .