27 December 2018
⇐20181226 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181228⇒

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 W30N14
(473",277") 		W02-W47
(45) 		6.4 0.8 1.7e21
2 E11N60
(-92",868") 		E51-W57
(108) 		2.8 0.9 3.6e21
3 E12S25
(-177",-373") 		E23-W05
(28) 		1.6 0.2 6.4e19
4 E02S09
(-32",-108") 		E12-W12
(24) 		1.4 -0.1 -3.5e19
5 W37S71
(190",-910") 		E44-W70
(114) 		1.1 -1.1 -3.8e21
6 W10S17
(161",-249") 		W08-W12
(4) 		0.1 -2.4 -2.6e19

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-2018 20:30 UT .