4 January 2022
⇐20220103 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220105⇒

NOAA
4 Active Regions
12916
12919
12922
12923

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 E15S48
(-169",-687") 		E25-W15
(40) 		5.2 -1.6 -1.9e21
2 E24S08
(-388",-79") 		E39-E02
(37) 		3.6 -0.2 -9.3e19
3 W28S02
(461",24") 		W12-W43
(31) 		1.8 -0.2 -4.8e19
4 W17S29
(250",-428") 		W15-W19
(4) 		0.1 -2.0 -2.7e19
5 E32N08
(-519",190") 		E34-E30
(4) 		0.0 -0.8 -4.9e18

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 4-Jan-2022 20:30 UT .