27 March 2025
⇐20250326 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20250328⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W45S44
(491",-608") 		E09-W60
(69) 		14.7 2.4 9.2e21
2 W23N31
(324",583") 		W04-W39
(35) 		2.2 1.9 8.6e20
3 E08N10
(-129",277") 		E10-E05
(5) 		0.1 18.4 3.1e20

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 27-Mar-2025 20:30 UT .