1 May 2020
⇐20200430 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200502⇒

NOAA
4 Active Regions
12760
12762
12763
12761

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 E11S13
(-178",-156") 		E30-W15
(45) 		8.1 -0.1 -1.7e20
2 W11S65
(77",-832") 		E66-W61
(127) 		4.5 -0.7 -3.8e21
3 E10N65
(-71",891") 		E63-W32
(95) 		1.2 1.1 3.3e21
4 W16N36
(207",610") 		W09-W23
(14) 		0.4 0.9 1.7e20

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 1-May-2020 19:30 UT .