10 March 2025
⇐20250309 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20250311⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W03S22
(46",-253") 		E18-W20
(38) 		3.6 -10.5 -5.9e21
2 W54N22
(724",428") 		W35-W72
(37) 		1.7 -4.2 -2.2e21
3 E46S31
(-600",-427") 		E59-E35
(24) 		0.9 -2.9 -6.2e20
4 W29N66
(192",919") 		W08-W45
(37) 		0.3 -0.7 -1.3e20
5 W20S52
(202",-684") 		W15-W24
(9) 		0.1 3.8 7.5e19
6 W18S36
(246",-469") 		W16-W20
(4) 		0.0 -2.2 -1.7e19

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 10-Mar-2025 20:30 UT .