3 June 2021
⇐20210602 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210604⇒

NOAA
4 Active Regions
12827
12829
12825
12828

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 E13S16
(-209",-253") 		E30-W16
(46) 		7.1 -0.8 -1.0e21
2 E15N63
(-111",845") 		E61-W50
(111) 		2.3 0.8 6.6e20
3 E23S53
(-222",-750") 		E49-E02
(47) 		2.3 -0.5 -2.9e20
4 W35S08
(532",-130") 		W20-W47
(27) 		1.5 -0.3 -8.6e19
5 E44S54
(-389",-762") 		E46-E40
(6) 		0.0 -1.0 -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 3-Jun-2021 23:30 UT .