19 March 2021
⇐20210318 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210320⇒

NOAA
3 Active Regions
12810
12808
12809

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 W15S52
(159",-682") 		E47-W49
(96) 		13.5 -1.5 -4.4e21
2 W10S08
(162",-25") 		W08-W11
(3) 		0.0 1.4 9.1e18
3 E72S69
(-325",-882") 		E79-E66
(13) 		0.0 -1.9 -4.7e19

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 19-Mar-2021 20:30 UT .