14 August 2018
⇐20180813 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180815⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W18N57
(159",734") 		E72-W45
(117) 		7.0 0.8 4.2e21
2 E40S17
(-580",-349") 		E49-E28
(21) 		3.3 -0.8 -1.4e21
3 W40N09
(607",72") 		W28-W50
(22) 		1.7 2.7 2.0e21
4 E25S56
(-224",-838") 		E49-E11
(38) 		0.6 -0.3 -3.4e20
5 E44S51
(-418",-780") 		E54-E35
(19) 		0.2 -0.4 -1.9e20
6 W32N20
(477",231") 		W31-W34
(3) 		0.0 -0.9 -1.2e19
7 E35S35
(-444",-610") 		E36-E33
(3) 		0.0 -1.5 -3.9e19

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 14-Aug-2018 23:10 UT .