3 February 2022
⇐20220202 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220204⇒

NOAA
4 Active Regions
12936
12938
12939
12940

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 W22S26
(333",-339") 		E19-W48
(67) 		9.4 -0.8 -1.3e21
2 E15N38
(-196",682") 		E32-E05
(27) 		0.9 1.2 2.6e20
3 W32N03
(522",141") 		W30-W35
(5) 		0.1 -1.2 -1.8e19
4 E20S52
(-204",-703") 		E22-E17
(5) 		0.1 -1.1 -1.3e19
5 W12S08
(201",-25") 		W10-W14
(4) 		0.0 -2.1 -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 3-Feb-2022 20:30 UT .