3 April 2017
⇐20170402 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170404⇒

NOAA
4 Active Regions
12644
12645
12648
12647

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 E11S55
(-103",-719") 		E44-W63
(107) 		13.1 -0.7 -6.1e33
2 E31N63
(-229",889") 		E49-W26
(75) 		1.0 0.5 1.7e33
3 E57S34
(-666",-484") 		E63-E50
(13) 		0.1 -0.6 -7.9e31

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 3-Apr-2017 19:30 UT .