24 July 2021
⇐20210723 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210725⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W33S11
(508",-246") 		E02-W64
(66) 		7.4 -0.0 -6.1e19
2 W05N57
(43",748") 		E86-W87
(173) 		6.0 1.0 1.5e21
3 E19S68
(-119",-901") 		E32-E07
(25) 		0.2 -0.5 -5.8e19
4 E10S16
(-157",-341") 		E13-E07
(6) 		0.1 -3.6 -5.7e19
5 W40N39
(471",548") 		W38-W43
(5) 		0.1 -1.4 -1.8e19
6 W39N15
(575",177") 		W37-W41
(4) 		0.1 -1.9 -1.9e19
7 W19S27
(269",-495") 		W17-W21
(4) 		0.0 -1.5 -1.1e19

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 24-Jul-2021 23:30 UT .