17 April 2024
⇐20240416 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240418⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W10S15
(160",-164") 		E04-W17
(21) 		1.0 -6.5 -1.0e21
2 W01S50
(10",-669") 		E10-W09
(19) 		0.2 -0.4 -2.1e19
3 W38S37
(471",-511") 		W33-W41
(8) 		0.2 -0.7 -2.6e19
4 W24S48
(256",-655") 		W19-W27
(8) 		0.1 -0.4 -1.3e19
5 W44N01
(669",79") 		W40-W47
(7) 		0.1 -0.9 -2.5e19
6 W37S47
(394",-651") 		W33-W41
(8) 		0.1 0.6 8.0e18
7 W47S53
(422",-724") 		W45-W49
(4) 		0.1 1.7 2.9e19
8 W12S22
(183",-277") 		W08-W14
(6) 		0.0 -9.6 -6.7e19

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 17-Apr-2024 23:30 UT .