19 December 2010
⇐20101218 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20101220⇒

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 W39S49
(403",-730") 		W23-W50
(27) 		0.9 0.6 5.7e32
2 W50N15
(725",269") 		W42-W60
(18) 		0.2 -3.2 -5.6e32
3 W03S07
(55",-101") 		6
(1.5e03) 		-2.6 7.3 1.1e32
4 E34S13
(-536",-207") 		E36-E32
(4) 		0.0 2.2 2.8e31

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 19-Dec-2010 23:30 UT .