7 August 2018
20180806 Week Rotation Today Rotation Week 20180808

NOAA
1 Active Region

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W07N69
(41",846")
E73-W55
(128)
3.8 1.1 5.8e21
2 E11S08
(-179",-231")
E20-W07
(27)
3.2 -1.2 -8.6e20
3 W32N02
(506",-55")
W30-W35
(5)
0.1 -1.6 -3.7e19
4 W30N05
(477",-3")
W28-W32
(4)
0.0 -1.0 -1.1e19

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 7-Aug-2018 23:10 UT .