5 September 2018
⇐20180904 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180906⇒

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 E05N70
(-28",850") 		E73-W77
(150) 		3.7 1.1 6.1e21
2 E35N15
(-525",154") 		E57-E22
(35) 		3.5 1.7 2.0e21
3 W21S05
(336",-187") 		W09-W36
(27) 		2.6 -1.3 -8.5e20
4 W22S26
(320",-521") 		W12-W29
(17) 		0.6 -0.6 -1.5e20

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 5-Sep-2018 23:10 UT .