20 July 2020
⇐20200719 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200721⇒

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 W18S11
(283",-250") 		E19-W36
(55) 		6.7 -0.3 -2.8e20
2 W24N70
(136",857") 		E69-W65
(134) 		2.2 1.0 8.4e20
3 W41S65
(264",-879") 		65
(3.7e04) 		-0.8 2.7 1.0e21
4 W38N02
(581",-36") 		W33-W43
(10) 		0.2 1.5 6.0e19

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 20-Jul-2020 19:00 UT .