14 April 2019
⇐20190413 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190415⇒

NOAA
1 Active Region
12738

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 W01N57
(7",853") 		E57-W56
(113) 		3.5 0.4 2.2e21
2 W24S71
(130",-871") 		E68-W69
(137) 		2.2 -0.9 -4.0e21
3 W73S63
(411",-838") 		W69-W81
(12) 		0.1 -1.3 -5.2e20

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 14-Apr-2019 22:00 UT .