4 September 2018
20180903 Week Rotation Today Rotation Week 20180905

NOAA
0 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W05N71
(28",854")
E83-W68
(151)
3.3 1.1 5.2e21
2 W10S05
(173",-200")
E03-W19
(22)
2.3 -1.5 -7.4e20
3 E46N15
(-658",160")
E60-E36
(24)
1.4 1.1 8.5e20
4 W09S23
(130",-482")
W06-W11
(5)
0.1 -1.1 -4.0e19

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 4-Sep-2018 23:10 UT .