23 September 2020
20200922 Week Rotation Today Rotation Week 20200924

NOAA
0 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E12N44
(-146",581")
E54-W38
(92)
27.1 0.4 2.2e21
2 E21S57
(-188",-859")
E44-E10
(34)
0.6 -0.5 -1.2e20
3 W29N29
(408",367")
W22-W35
(13)
0.4 0.8 5.6e19
4 E05S30
(-69",-583")
E07-E03
(4)
0.1 -0.6 -9.1e18
5 E34S12
(-521",-291")
E36-E32
(4)
0.0 -0.7 -5.4e18

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 23-Sep-2020 19:30 UT .