18 March 2019
⇐20190317 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190319⇒

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 W20S70
(110",-864") 		E87-W74
(161) 		2.8 -1.2 -5.4e21
2 W36N58
(300",865") 		W05-W51
(46) 		1.1 0.6 2.1e21
3 W51S01
(754",61") 		W46-W57
(11) 		0.3 0.5 1.2e20
4 W17S38
(219",-505") 		W10-W21
(11) 		0.1 -1.8 -4.4e19
5 W16S06
(267",17") 		W14-W18
(4) 		0.0 -1.2 -9.8e18

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 18-Mar-2019 20:30 UT .