5 May 2025
⇐20250504 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20250506⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E20S36
(-265",-507") 		E45-W21
(66) 		5.4 -4.0 -4.0e21
2 E07S16
(-106",-211") 		E14-W01
(15) 		0.7 -2.4 -2.6e20
3 W27S53
(259",-730") 		W09-W41
(32) 		0.4 0.7 8.4e19
4 W32N51
(323",769") 		W23-W39
(16) 		0.3 -0.3 -2.8e19
5 W14N63
(105",876") 		E11-W21
(32) 		0.2 -0.6 -5.0e19
6 E18S18
(-276",-232") 		E21-E12
(9) 		0.1 -4.4 -8.3e19
7 W17S44
(199",-623") 		W12-W22
(10) 		0.1 -2.1 -4.7e19

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 5-May-2025 23:30 UT .