19 September 2019
⇐20190918 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190920⇒

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 W18N72
(94",865") 		E82-W88
(170) 		2.8 1.1 1.1e21
2 W21S55
(197",-843") 		E45-W43
(88) 		2.2 -0.5 -4.3e20
3 E12S04
(-201",-178") 		E19-W02
(21) 		1.6 -1.9 -4.9e20
4 W14N15
(226",131") 		W12-W17
(5) 		0.1 1.0 1.7e19

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-Sep-2019 23:40 UT .