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 W42S43
(457",-661") 		E21-W79
(100) 		9.6 1.7 4.8e21
2 E46S07
(-676",-132") 		E62-E29
(33) 		2.0 -2.4 -1.1e21
3 E59N21
(-756",322") 		E67-E46
(21) 		1.3 -1.9 -7.7e20
4 E13N02
(-205",2") 		E16-E10
(6) 		0.3 -4.5 -1.8e20
5 E25S02
(-397",-49") 		E28-E20
(8) 		0.1 -1.5 -1.5e19

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 23:30 UT .