15 May 2020
⇐20200514 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200516⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E16S16
(-253",-226") 		E49-W28
(77) 		13.4 0.1 2.8e20
2 E07S64
(-52",-836") 		E74-W63
(137) 		4.1 -0.7 -3.9e21
3 W31N06
(484",142") 		W20-W47
(27) 		2.3 -0.4 -3.4e20
4 E26N69
(-146",900") 		E57-W06
(63) 		0.5 1.2 2.6e21
5 W33S27
(466",-394") 		W28-W40
(12) 		0.4 -1.1 -2.0e20
6 W26S47
(281",-666") 		W21-W31
(10) 		0.2 -0.8 -7.9e19
7 W24S17
(370",-247") 		W22-W26
(4) 		0.1 -0.8 -1.9e19
8 W17S38
(219",-552") 		W15-W19
(4) 		0.0 -0.6 -9.2e18

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 15-May-2020 19:30 UT .