3 May 2025
⇐20250502 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20250504⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E41S34
(-516",-494") 		E72-E04
(68) 		3.3 -4.4 -3.3e21
2 W21N42
(246",687") 		E23-W28
(51) 		2.4 -1.0 -5.9e20
3 W38N04
(579",121") 		W32-W44
(12) 		1.0 -7.1 -1.4e21
4 W07S54
(69",-732") 		E17-W27
(44) 		0.7 0.7 1.1e20
5 W37N29
(501",502") 		W34-W41
(7) 		0.2 -8.0 -3.0e20
6 E14N44
(-168",703") 		E17-E10
(7) 		0.1 1.6 4.7e19
7 E34S14
(-515",-180") 		E36-E31
(5) 		0.1 -5.3 -1.1e20
8 W35N19
(511",363") 		W32-W37
(5) 		0.0 -9.8 -8.4e19

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 3-May-2025 23:30 UT .