28 September 2021
⇐20210927 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210929⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E06N06
(-92",-7") 		E50-W43
(93) 		9.8 -0.3 -4.2e20
2 W24N64
(172",808") 		E68-W73
(141) 		6.4 0.8 1.6e21

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-Sep-2021 19:30 UT .