23 September 2018
⇐20180922 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180924⇒

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 E03N68
(-19",835") 		E80-W55
(135) 		4.9 0.9 5.5e21
2 W18S07
(289",-232") 		W06-W29
(23) 		2.0 0.1 7.3e19
3 E05S09
(-88",-267") 		E11-W06
(17) 		1.7 -0.4 -1.4e20
4 E13S64
(-96",-902") 		E48-W54
(102) 		1.0 -0.7 -2.1e21
5 E19S24
(-280",-481") 		E21-E16
(5) 		0.2 -0.6 -3.5e19
6 W20S26
(292",-511") 		W17-W22
(5) 		0.1 -1.1 -3.3e19
7 W38S24
(541",-475") 		W35-W41
(6) 		0.1 -0.5 -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 23-Sep-2018 23:10 UT .