29 May 2021
⇐20210528 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210530⇒

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 E12N12
(-187",216") 		E48-W44
(92) 		16.6 -0.0 -6.5e19
2 W17N62
(130",840") 		E47-W27
(74) 		1.6 1.1 6.1e20
3 E08S41
(-93",-616") 		E14-E01
(13) 		0.4 1.6 1.3e20
4 W05S20
(82",-304") 		W03-W08
(5) 		0.1 -0.9 -1.6e19
5 E35N35
(-446",556") 		E40-E34
(6) 		0.1 -0.5 -1.2e19
6 W15N08
(244",142") 		W14-W16
(2) 		0.0 -1.5 -1.1e19

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 29-May-2021 23:30 UT .