17 April 2017
⇐20170416 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170418⇒

NOAA
1 Active Region
12650

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 W12S14
(194",-148") 		E02-W28
(30) 		3.8 1.6 1.3e33
2 E04N61
(-30",876") 		E55-W58
(113) 		2.2 0.6 2.3e33
3 W41S28
(558",-382") 		W26-W48
(22) 		1.3 0.4 3.1e32
4 E55S06
(-780",-42") 		E67-E45
(22) 		1.0 -1.4 -1.2e33
5 W47S71
(223",-882") 		W13-W75
(62) 		0.8 -0.8 -2.2e33

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 17-Apr-2017 19:30 UT .