24 May 2021
⇐20210523 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210525⇒

NOAA
2 Active Regions
12824
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 E27S07
(-429",-99") 		E48-W02
(50) 		2.7 -0.0 -5.1e18
2 W36N52
(342",758") 		W37-W45
(8) 		1.7 0.6 3.4e20
3 E50S24
(-659",-378") 		E56-E43
(13) 		0.3 0.8 5.3e19
4 W31S02
(484",-7") 		W28-W34
(6) 		0.1 -1.2 -1.9e19

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 24-May-2021 19:30 UT .