7 September 2021
⇐20210906 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210908⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E06N71
(-30",853") 		E58-W63
(121) 		3.5 1.0 1.3e21
2 W12S04
(190",-181") 		E13-W27
(40) 		2.7 0.3 1.2e20
3 W14S47
(157",-769") 		E35-W27
(62) 		2.6 -1.1 -8.0e20
4 E24N23
(-352",270") 		E28-E16
(12) 		0.3 3.2 1.4e20

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 7-Sep-2021 11:30 UT .