4 March 2021
⇐20210303 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210305⇒

NOAA
2 Active Regions
12806
12807

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 W07N00
(115",126") 		E43-W46
(89) 		18.5 0.3 8.5e20
2 E29S83
(-58",-939") 		E86-W52
(138) 		0.2 -1.4 -1.7e20
3 E63S71
(-275",-892") 		E68-E52
(16) 		0.1 -0.9 -5.8e19

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 4-Mar-2021 20:30 UT .