26 May 2021
⇐20210525 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210527⇒

NOAA
3 Active Regions
12824
12826
12825

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 E15S13
(-237",-189") 		E36-W23
(59) 		9.5 -0.0 -5.8e18
2 E35N63
(-243",854") 		E44-E41
(3) 		0.4 0.8 1.4e20
3 E15S76
(-61",-913") 		E26-E03
(23) 		0.1 -1.1 -5.6e19
4 E37N05
(-569",100") 		E38-E35
(3) 		0.1 -0.8 -7.4e18

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 26-May-2021 19:30 UT .