25 October 2020
20201024 Week Rotation Today Rotation Week 20201026

NOAA
1 Active Region

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W20N56
(183",757")
E63-W50
(113)
7.7 0.9 1.8e21
2 E10S05
(-165",-163")
E23-W14
(37)
3.3 0.1 7.3e19
3 E29S26
(-423",-491")
E37-E21
(16)
0.5 0.6 6.7e19
4 W38N03
(593",-18")
W30-W44
(14)
0.5 1.4 1.3e20
5 W10S68
(63",-924")
E09-W15
(24)
0.2 -0.9 -1.0e20
6 W50N46
(515",657")
W48-W50
(2)
0.0 2.6 3.4e19
7 W20N28
(299",382")
W19-W22
(3)
0.0 -2.1 -1.5e19

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 25-Oct-2020 12:30 UT .