4 January 2020
⇐20200103 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200105⇒

NOAA
1 Active Region
12755

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 E14S19
(-223",-261") 		E33-W16
(49) 		5.5 -0.5 -6.2e20
2 W26S11
(425",-133") 		E01-W49
(50) 		5.4 -0.1 -1.3e20
3 W12S62
(97",-835") 		E80-W78
(158) 		5.0 -0.9 -5.0e21
4 E06N67
(-37",922") 		E24-W15
(39) 		0.4 1.2 1.2e21
5 W30S35
(408",-513") 		W27-W33
(6) 		0.1 -0.8 -4.5e19

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 4-Jan-2020 20:30 UT .