13 November 2017
⇐20171112 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171114⇒

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 E06S42
(-80",-691") 		E59-W18
(77) 		5.7 -0.6 -2.0e33
2 W31N61
(244",828") 		E66-W83
(149) 		3.6 1.0 5.1e33
3 W36N21
(529",315") 		W26-W46
(20) 		0.8 3.8 1.2e33
4 E46N16
(-678",231") 		E54-E40
(14) 		0.5 2.2 6.8e32

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 13-Nov-2017 20:30 UT .