13 December 2020
⇐20201212 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201214⇒

NOAA
3 Active Regions
12790
12792
12791

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 W03N19
(56",329") 		E45-W47
(92) 		15.4 0.1 1.4e20
2 E28S62
(-210",-858") 		E71-W38
(109) 		2.4 -1.0 -8.5e20
3 E43N67
(-256",903") 		E71-W54
(125) 		1.6 0.7 6.4e20
4 W50N02
(743",34") 		W42-W57
(15) 		0.3 -0.4 -2.7e19
5 W25S08
(403",-128") 		W23-W26
(3) 		0.0 -0.8 -5.6e18

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 13-Dec-2020 20:30 UT .