8 April 2019
⇐20190407 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190409⇒

NOAA
2 Active Regions
12738
12737

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 W09S56
(81",-734") 		E52-W75
(127) 		8.7 -0.7 -4.0e21
2 E35N60
(-274",868") 		E58-E28
(30) 		0.5 0.9 1.3e21
3 E25N11
(-391",281") 		E30-E18
(12) 		0.3 0.9 8.9e19
4 W37S57
(315",-758") 		W35-W39
(4) 		0.0 -2.3 -1.1e20

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 8-Apr-2019 19:30 UT .