30 August 2019
20190829 Week Rotation Today Rotation Week 20190831

NOAA
0 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W25N12
(387",83")
E15-W46
(61)
9.1 1.1 1.7e21
2 E07N67
(-47",825")
E90-W44
(134)
4.1 1.1 1.5e21
3 E26N31
(-363",396")
E33-E16
(17)
1.5 0.0 1.2e19
4 E17S27
(-245",-530")
E22-E11
(11)
0.5 -0.8 -8.5e19
5 E03S23
(-46",-481")
E05-W02
(7)
0.1 -0.6 -1.2e19
6 E24S23
(-358",-462")
E28-E20
(8)
0.1 -0.8 -1.4e19
7 E45S34
(-556",-592")
E47-E40
(7)
0.1 -0.7 -1.3e19
8 W27N45
(300",594")
W24-W30
(6)
0.1 -0.5 -5.5e18
9 E47S12
(-682",-274")
E51-E44
(7)
0.0 -1.2 -1.4e19
10 E47N36
(-565",490")
E51-E43
(8)
0.0 -0.8 -7.9e18

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 30-Aug-2019 23:40 UT .