20 December 2019
⇐20191219 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191221⇒

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 E15S21
(-234",-325") 		E27-W09
(36) 		5.0 -0.4 -5.8e20
2 E08S64
(-57",-869") 		E74-W62
(136) 		2.0 -0.5 -1.4e21
3 W25N63
(187",884") 		E38-W45
(83) 		2.0 0.7 2.8e21
4 E28S04
(-459",-51") 		E39-E17
(22) 		1.4 -0.2 -9.5e19
5 W13S27
(193",-421") 		W12-W15
(3) 		0.1 -1.0 -2.1e19

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-Dec-2019 20:30 UT .