28 October 2021
20211027 Week Rotation Today Rotation Week 20211029



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E06N60
(-52",794")
E45-W67
(112)
7.2 0.6 1.0e21
2 W22N08
(363",57")
W04-W37
(33)
4.1 -0.1 -6.4e19
3 E22N10
(-363",96")
E32-E08
(24)
1.4 -0.1 -2.6e19
4 E12N30
(-171",409")
E17-E07
(10)
0.3 1.3 6.9e19
5 W06N08
(94",63")
W01-W08
(7)
0.1 -1.1 -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 28-Oct-2021 19:30 UT .