11 December 2021
⇐20211210 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211212⇒

NOAA
1 Active Region
12904

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 W07N05
(117",90") 		E27-W33
(60) 		6.9 -0.2 -2.1e20
2 W00N65
(1",885") 		E34-W69
(103) 		2.4 0.7 5.7e20
3 E25S37
(-326",-579") 		E35-E05
(30) 		2.1 -1.4 -6.3e20
4 E41S64
(-285",-872") 		E51-E21
(30) 		0.7 -0.7 -2.4e20
5 E02S23
(-30",-372") 		E05-W01
(6) 		0.1 -0.9 -1.6e19

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 11-Dec-2021 20:30 UT .