25 January 2022
⇐20220124 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220126⇒

NOAA
3 Active Regions
12934
12935
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 W02N02
(30",136") 		E10-W11
(21) 		2.7 0.8 3.5e20
2 E08N61
(-69",895") 		E49-W12
(61) 		1.1 0.7 3.2e20
3 W05S79
(18",-933") 		E38-W54
(92) 		0.1 -0.3 -1.4e19

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 25-Jan-2022 20:30 UT .