27 March 2018
⇐20180326 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180328⇒

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 W03N43
(35",731") 		E40-W33
(73) 		8.7 0.5 2.9e33
2 E02S70
(-13",-859") 		E73-W75
(148) 		3.5 -1.2 -6.3e33
3 E28S44
(-333",-587") 		E38-E21
(17) 		0.7 -0.6 -2.1e32
4 E03N07
(-54",225") 		E05-E02
(3) 		0.0 -2.8 -2.0e31

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 27-Mar-2018 23:30 UT .