7 July 2018
⇐20180706 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180708⇒

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 W09N68
(55",851") 		E64-W79
(143) 		3.3 1.0 5.0e21
2 W20S32
(280",-542") 		W18-W22
(4) 		0.1 -0.9 -2.6e19
3 E30N10
(-459",117") 		E31-E27
(4) 		0.1 -1.7 -3.1e19
4 E34S21
(-488",-390") 		E36-E31
(5) 		0.1 -0.7 -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 7-Jul-2018 23:10 UT .