29 July 2018
20180728 Week Rotation Today Rotation Week 20180730

NOAA
0 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E18S12
(-284",-287")
E46-W25
(71)
10.5 -0.2 -6.7e32
2 W02N66
(13",824")
E75-W51
(126)
4.9 1.1 6.3e33
3 E42S23
(-577",-436")
E46-E38
(8)
0.1 -0.8 -6.9e31
4 W23S25
(329",-474")
W20-W25
(5)
0.1 -0.7 -2.8e31
5 W17N17
(265",196")
W15-W19
(4)
0.0 -1.7 -1.6e31

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 29-Jul-2018 16:12 UT .