30 October 2021
⇐20211029 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211031⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W03N60
(22",797") 		E83-W57
(140) 		5.6 0.7 1.1e21
2 W03N11
(52",104") 		E15-W22
(37) 		3.2 -0.0 -1.2e19
3 E14S06
(-241",-181") 		E17-E11
(6) 		0.2 -0.9 -2.8e19
4 W25N39
(318",550") 		W21-W28
(7) 		0.1 -0.6 -1.4e19

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 30-Oct-2021 23:30 UT .