12 October 2018
⇐20181011 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181013⇒

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 W15S34
(207",-616") 		79
(6.0e05) 		-0.6 5.1 3.0e22
2 W36N73
(162",894") 		E87-W77
(164) 		1.6 1.1 5.2e21
3 W19S38
(250",-670") 		W16-W22
(6) 		0.1 -0.8 -5.8e19
4 E26S20
(-390",-413") 		E27-E23
(4) 		0.1 -0.5 -2.0e19

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 12-Oct-2018 23:10 UT .