6 December 2017
⇐20171205 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171207⇒

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 E24N55
(-232",797") 		E72-W59
(131) 		5.5 1.5 8.5e33
2 W56N32
(679",521") 		W45-W67
(22) 		0.4 1.3 6.9e32
3 W42S70
(219",-919") 		W05-W69
(64) 		0.4 -0.9 -1.9e33
4 W42N47
(451",708") 		W32-W50
(18) 		0.2 0.3 6.1e31
5 W34S39
(420",-613") 		W29-W37
(8) 		0.1 -0.6 -2.2e31

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 6-Dec-2017 20:30 UT .