19 May 2020
⇐20200518 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200520⇒

NOAA
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Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W15S54
(144",-750") 		E77-W37
(114) 		6.8 -0.7 -3.6e21
2 E08S12
(-132",-171") 		E27-W17
(44) 		5.4 -0.0 -2.4e19
3 W21N07
(336",149") 		W05-W37
(32) 		2.4 0.0 9.2e18
4 E34N67
(-207",884") 		E43-W06
(49) 		0.7 0.8 2.1e21
5 E27S27
(-378",-403") 		E30-E23
(7) 		0.1 -1.2 -4.7e19
6 W49S18
(678",-278") 		W46-W51
(5) 		0.1 -0.5 -2.9e19
7 W36S19
(535",-277") 		W33-W40
(7) 		0.1 -0.5 -1.8e19

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-May-2020 19:30 UT .