11 December 2018
⇐20181210 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181212⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E11S61
(-88",-847") 		E53-W65
(118) 		4.2 -0.8 -4.3e21
2 E17S24
(-264",-390") 		E33-W03
(36) 		3.8 -0.2 -1.8e20
3 E13N63
(-98",871") 		E45-W72
(117) 		3.1 0.9 4.3e21
4 E33S13
(-513",-212") 		E44-E23
(21) 		1.8 -0.5 -3.3e20
5 W03N41
(33",642") 		W00-W04
(4) 		0.0 -0.6 -1.2e19
6 E39S09
(-612",-154") 		E41-E37
(4) 		0.0 -1.5 -2.7e19
7 E17N28
(-244",469") 		E18-E15
(3) 		0.0 -0.6 -8.3e18
8 W26S40
(327",-616") 		W23-W27
(4) 		0.0 -0.5 -1.0e19

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 11-Dec-2018 20:30 UT .