20 May 2016
⇐20160519 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160521⇒

NOAA
3 Active Regions
12544
12546
12547

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 W35N42
(408",658") 		E30-W75
(105) 		9.7 -0.3 -2.3e33
2 W18S16
(277",-231") 		W12-W23
(11) 		0.6 -1.9 -2.6e32
3 E43S18
(-613",-265") 		E48-E36
(12) 		0.2 3.4 3.2e32
4 W31S11
(485",-160") 		W29-W34
(5) 		0.1 -4.4 -1.3e32
5 W16S06
(261",-66") 		W15-W17
(2) 		0.0 -3.0 -2.9e31

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 20-May-2016 23:17 UT .