18 December 2016
⇐20161217 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20161219⇒

NOAA
1 Active Region
12618

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 E06N45
(-78",702") 		E62-W33
(95) 		11.4 0.8 4.8e33
2 E26S11
(-421",-163") 		E48-W12
(60) 		7.6 0.9 2.0e33
3 E53S20
(-733",-325") 		E66-E35
(31) 		1.1 1.6 1.5e33

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 18-Dec-2016 20:30 UT .