20 January 2019
⇐20190119 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190121⇒

NOAA
0 Active Regions

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 E02S04
(-40",21") 		E28-W28
(56) 		10.8 0.7 1.3e21
2 W21S72
(112",-897") 		E62-W78
(140) 		2.0 -1.1 -4.8e21
3 E35N64
(-244",903") 		E67-W30
(97) 		1.2 0.7 3.3e21
4 E18N03
(-303",127") 		E22-E14
(8) 		0.2 -0.9 -4.5e19
5 W10N58
(88",868") 		W01-W18
(17) 		0.2 1.5 3.2e20
6 E35S25
(-516",-340") 		E38-E31
(7) 		0.1 1.6 4.0e19
7 E35N02
(-555",99") 		E37-E33
(4) 		0.1 -0.6 -1.1e19

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 20-Jan-2019 20:30 UT .