31 March 2017
⇐20170330 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170401⇒

NOAA
3 Active Regions
12644
12645
12643

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 W08S56
(75",-730") 		E72-W68
(140) 		11.9 -1.1 -8.7e33
2 W07N01
(109",132") 		E12-W23
(35) 		4.1 0.6 4.3e32
3 E31N13
(-487",310") 		E39-E24
(15) 		0.4 0.6 8.3e31

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 31-Mar-2017 19:30 UT .