22 January 2022
⇐20220121 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220123⇒

NOAA
4 Active Regions
12933
12934
12927
12932

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 W15N03
(255",130") 		W02-W24
(22) 		2.3 0.7 2.5e20
2 W53S67
(301",-874") 		W51-W73
(22) 		1.0 -0.7 -3.5e20
3 E40S06
(-621",-37") 		E48-E32
(16) 		0.9 0.9 1.6e20
4 W33N21
(492",424") 		W25-W40
(15) 		0.4 2.8 2.5e20
5 W53S48
(524",-681") 		W45-W59
(14) 		0.2 -1.3 -7.1e19
6 W28N16
(445",350") 		W25-W31
(6) 		0.1 7.0 1.0e20

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 22-Jan-2022 20:30 UT .