18 December 2010
⇐20101217 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20101219⇒

NOAA
1 Active Region
11135

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W31S54
(291",-783") 		W08-W54
(46) 		1.8 0.4 8.0e32
2 W35N15
(546",274") 		W21-W49
(28) 		1.0 -4.1 -1.7e33
3 W15N26
(231",448") 		W13-W17
(4) 		0.1 -9.5 -2.9e32

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-2010 23:30 UT .