1 October 2023
20230930 Week Rotation Today Rotation Week 20231002



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W46N37
(549",510")
W31-W67
(36)
1.3 4.1 1.3e21
2 W18N06
(301",-11")
W14-W23
(9)
0.2 1.3 4.1e19
3 W15N70
(82",859")
W01-W29
(28)
0.2 0.2 1.3e19
4 E12N72
(-59",873")
E22-E03
(19)
0.1 -0.6 -1.9e19
5 E72N48
(-609",687")
E72-E67
(5)
0.1 -0.7 -2.0e19

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 1-Oct-2023 23:30 UT .