9 April 2018
⇐20180408 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180410⇒

NOAA
1 Active Region
12703

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 W29N07
(462",201") 		E02-W48
(50) 		3.3 -2.3 -2.4e33
2 E32N11
(-498",265") 		E49-E17
(32) 		2.5 -0.3 -2.3e32
3 W24S72
(122",-876") 		E82-W82
(164) 		1.5 -1.3 -3.9e33

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 9-Apr-2018 23:30 UT .