28 August 2018
⇐20180827 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180829⇒

NOAA
2 Active Regions
12720
12719

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 W23S19
(344",-415") 		W01-W41
(40) 		9.3 -0.2 -7.9e20
2 E03N67
(-16",826") 		E71-W75
(146) 		5.1 1.2 7.2e21
3 W25S68
(150",-914") 		W08-W45
(37) 		0.2 -0.6 -6.3e20
4 W03N24
(42",284") 		W01-W04
(3) 		0.1 -0.9 -1.3e19
5 E20N28
(-285",346") 		E21-E17
(4) 		0.0 -0.7 -9.2e18

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 28-Aug-2018 23:10 UT .