4 January 2018
⇐20180103 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180105⇒

NOAA
0 Active Regions

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 E12N49
(-131",772") 		E55-W65
(120) 		8.1 0.9 5.9e33
2 W16S71
(85",-906") 		E54-W63
(117) 		1.3 -1.4 -4.2e33
3 E03S32
(-43",-461") 		E07-W03
(10) 		0.1 -0.8 -3.3e31
4 E31S14
(-490",-181") 		E34-E29
(5) 		0.1 -1.1 -5.2e31
5 E63S70
(-304",-904") 		E72-E43
(29) 		0.1 -0.5 -4.5e32

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-2018 20:30 UT .