19 October 2010
⇐20101018 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20101020⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E40N12
(-607",121") 		E58-E15
(43) 		3.1 -2.5 -3.2e33
2 W11N22
(170",273") 		W04-W16
(12) 		0.7 -2.4 -3.8e32
3 W41N15
(610",185") 		W33-W51
(18) 		0.6 -2.3 -6.6e32
4 E15S62
(-115",-891") 		E42-W13
(55) 		0.6 0.5 6.7e32

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-Oct-2010 23:30 UT .