8 February 2025
⇐20250207 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20250209⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W21N09
(349",247") 		E02-W37
(39) 		5.6 -6.2 -5.9e21
2 E45S21
(-643",-266") 		E77-E07
(70) 		4.6 -7.8 -7.8e21
3 E14N67
(-91",932") 		E36-W19
(55) 		0.5 -0.4 -1.3e20
4 E55S46
(-558",-648") 		E66-E48
(18) 		0.2 -0.3 -2.0e19
5 W33S23
(484",-297") 		W29-W36
(7) 		0.2 -6.2 -2.0e20
6 E02N20
(-27",437") 		E03-W02
(5) 		0.1 -1.4 -3.1e19
7 E01S37
(-20",-487") 		E03-W01
(4) 		0.1 -1.5 -2.6e19
8 E08N31
(-111",594") 		E10-E04
(6) 		0.1 1.4 1.4e19

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 8-Feb-2025 20:30 UT .