27 April 2017
⇐20170426 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170428⇒

NOAA
3 Active Regions
12651
12652
12653

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 W07S58
(63",-767") 		E79-W48
(127) 		5.5 -1.0 -4.2e33
2 E21N62
(-159",870") 		E62-W17
(79) 		1.8 0.7 3.0e33
3 W57S28
(700",-415") 		W48-W70
(22) 		0.6 -0.6 -3.9e32
4 W02N17
(25",345") 		E03-W05
(8) 		0.2 4.8 1.9e32
5 W24S59
(200",-784") 		W20-W29
(9) 		0.1 -3.5 -2.1e32

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 27-Apr-2017 19:30 UT .