4 September 2024
⇐20240903 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240905⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W15N29
(211",360") 		E03-W25
(28) 		1.1 7.2 1.3e21
2 W25N41
(301",540") 		W20-W31
(11) 		0.3 2.2 1.3e20
3 W40N56
(343",735") 		W37-W46
(9) 		0.3 -0.3 -2.6e19
4 E22N60
(-178",767") 		E33-E15
(18) 		0.2 -0.6 -3.7e19
5 W31S39
(383",-677") 		W25-W38
(13) 		0.2 -1.8 -1.1e20
6 W13N52
(130",675") 		W11-W16
(5) 		0.1 -1.0 -2.0e19
7 W09N46
(108",601") 		W06-W12
(6) 		0.1 -1.0 -1.5e19
8 E03N47
(-34",614") 		E06-W01
(7) 		0.1 -0.8 -1.1e19
9 E34N55
(-304",719") 		E37-E31
(6) 		0.0 -1.2 -1.2e19

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 4-Sep-2024 23:30 UT .