9 September 2021
⇐20210908 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210910⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E04N69
(-25",839") 		E91-W92
(183) 		3.7 1.0 1.2e21
2 W46S38
(537",-654") 		W38-W59
(21) 		0.7 -1.4 -3.1e20
3 W10N23
(148",268") 		W06-W15
(9) 		0.2 6.0 1.5e20
4 E29N04
(-462",-45") 		E31-E26
(5) 		0.1 -1.4 -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 9-Sep-2021 23:30 UT .