19 June 2025
⇐20250618 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20250620⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W39S43
(434",-663") 		E19-W81
(100) 		9.9 1.9 5.4e21
2 E48S07
(-699",-132") 		E65-E31
(34) 		1.8 -2.3 -9.7e20
3 E61N21
(-773",321") 		E68-E50
(18) 		1.1 -1.3 -4.8e20
4 E15N01
(-242",-5") 		E18-E12
(6) 		0.3 -5.1 -2.0e20
5 E26S02
(-415",-52") 		E28-E23
(5) 		0.0 -2.0 -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 19-Jun-2025 19:30 UT .