15 December 2021
⇐20211214 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211216⇒

NOAA
4 Active Regions
12905
12906
12907
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 W00S51
(2",-752") 		E55-W49
(104) 		10.6 -0.5 -1.3e21
2 E35N00
(-564",18") 		E58-E04
(54) 		5.3 -0.3 -2.5e20
3 W25S06
(406",-93") 		W00-W44
(44) 		4.8 0.0 2.8e19
4 W44N68
(249",911") 		W23-W69
(46) 		0.3 0.4 8.4e19
5 E10S22
(-160",-346") 		E15-E04
(11) 		0.2 -2.3 -9.2e19
6 E06S30
(-84",-471") 		E08-W00
(8) 		0.2 -3.0 -1.2e20
7 E23S18
(-363",-279") 		E26-E19
(7) 		0.2 -2.9 -7.9e19
8 W29S24
(434",-391") 		W25-W33
(8) 		0.1 -0.7 -1.4e19
9 E33S37
(-419",-580") 		E36-E30
(6) 		0.1 -1.0 -1.3e19
10 W05S08
(85",-113") 		W04-W06
(2) 		0.0 -3.0 -2.2e19

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 15-Dec-2021 20:30 UT .