5 April 2025
⇐20250404 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20250406⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E32S30
(-437",-399") 		E70-E13
(57) 		2.9 -6.1 -3.5e21
2 W23N24
(343",481") 		W15-W32
(17) 		1.1 -4.9 -1.0e21
3 E08S01
(-132",79") 		E13-W02
(15) 		1.0 -10.3 -1.5e21
4 E06N66
(-43",915") 		E23-W05
(28) 		0.2 -0.8 -1.0e20
5 W20S01
(334",87") 		W17-W23
(6) 		0.2 -3.9 -1.4e20
6 E23N25
(-343",487") 		E27-E19
(8) 		0.0 -1.0 -7.4e18
7 E24S51
(-243",-682") 		E26-E21
(5) 		0.0 5.0 4.2e19

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 5-Apr-2025 23:30 UT .