2 April 2019
⇐20190401 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190403⇒

NOAA
1 Active Region
12737

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 W10S44
(117",-591") 		E66-W51
(117) 		16.2 -0.6 -4.2e21
2 W45S34
(570",-466") 		W42-W48
(6) 		0.2 -1.3 -1.7e20
3 W43N18
(622",378") 		W39-W48
(9) 		0.1 -0.7 -5.9e19

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 2-Apr-2019 19:30 UT .