8 February 2022
⇐20220207 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220209⇒

NOAA
4 Active Regions
12939
12940
12941
12942

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 E31S20
(-476",-243") 		E49-E18
(31) 		2.5 -4.7 -2.1e21
2 W05S04
(93",37") 		E08-W13
(21) 		1.4 0.0 9.5e18
3 W14N33
(191",618") 		W07-W20
(13) 		0.4 1.3 9.4e19
4 E55S54
(-464",-748") 		E54-E82
(-28) 		0.3 -1.0 -1.2e20
5 W25S05
(410",12") 		W21-W30
(9) 		0.3 -0.9 -4.6e19
6 E38N15
(-586",327") 		E43-E34
(9) 		0.2 -3.2 -1.2e20

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 8-Feb-2022 20:30 UT .