27 December 2019
⇐20191226 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191228⇒

NOAA
2 Active Regions
12753
12754

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 E15S64
(-106",-864") 		E80-W59
(139) 		3.9 -0.7 -4.1e21
2 E14N09
(-226",201") 		E30-W06
(36) 		3.4 0.1 3.7e19
3 E29S12
(-468",-166") 		E44-W04
(48) 		2.4 -0.3 -2.1e20
4 W19N10
(318",209") 		W10-W27
(17) 		1.5 -0.3 -1.2e20
5 E30N66
(-198",906") 		E66-E02
(64) 		0.6 0.5 9.5e20
6 W43S24
(609",-376") 		W39-W49
(10) 		0.2 -1.0 -9.6e19
7 W08N02
(138",72") 		W05-W11
(6) 		0.1 -1.5 -2.4e19
8 W14S28
(205",-430") 		W11-W16
(5) 		0.1 -1.8 -4.1e19

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 27-Dec-2019 20:30 UT .