17 August 2019
⇐20190816 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190818⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W02S39
(24",-679") 		E31-W51
(82) 		11.1 -0.4 -9.7e20
2 W19N71
(99",857") 		E90-W57
(147) 		2.8 1.5 1.5e21
3 W25S24
(368",-469") 		W19-W30
(11) 		0.1 -0.9 -2.2e19
4 E28N05
(-441",-18") 		E30-E25
(5) 		0.1 0.7 9.8e18
5 E31S08
(-481",-224") 		E33-E28
(5) 		0.0 -0.8 -7.4e18
6 E02N43
(-19",558") 		E03-W02
(5) 		0.0 1.2 1.0e19
7 E09N05
(-144",-31") 		E10-E07
(3) 		0.0 -1.1 -6.5e18
8 E02N04
(-33",-42") 		E03-E00
(3) 		0.0 -1.0 -6.1e18

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 17-Aug-2019 23:40 UT .