7 April 2025
⇐20250406 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20250408⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E17S32
(-236",-421") 		E48-W15
(63) 		3.7 -5.3 -3.4e21
2 W24S01
(385",84") 		W15-W31
(16) 		0.9 -7.8 -1.2e21
3 W50N23
(672",436") 		W47-W52
(5) 		0.6 -4.1 -7.4e20
4 E17S52
(-177",-688") 		E27-E02
(25) 		0.4 1.3 1.1e20
5 W05N53
(54",825") 		E09-W16
(25) 		0.2 -1.4 -8.3e19
6 W04S43
(48",-582") 		E01-W07
(8) 		0.2 -0.6 -1.6e19
7 W23S41
(279",-557") 		W19-W26
(7) 		0.1 -0.8 -2.2e19
8 W28S38
(351",-513") 		W26-W29
(3) 		0.0 -0.8 -7.1e18

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 7-Apr-2025 23:30 UT .