21 March 2022
⇐20220320 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220322⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E30S09
(-484",-41") 		E49-W03
(52) 		6.2 0.2 2.2e20
2 W18S10
(296",-64") 		W07-W35
(28) 		2.7 2.3 1.0e21
3 W38S69
(212",-861") 		E75-W64
(139) 		2.2 -1.3 -1.1e21
4 W03S12
(57",-79") 		W00-W06
(6) 		0.1 -1.3 -1.9e19
5 W65S53
(529",-731") 		W64-W67
(3) 		0.1 -0.6 -1.9e19
6 W25N03
(404",160") 		W22-W27
(5) 		0.1 1.4 1.3e19
7 W40N07
(614",204") 		W38-W42
(4) 		0.0 -0.8 -6.6e18

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 21-Mar-2022 20:30 UT .