1 May 2023
⇐20230430 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230502⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E24S40
(-300",-568") 		E39-W10
(49) 		3.7 2.9 2.2e21
2 E36N07
(-561",165") 		E46-E27
(19) 		1.0 2.0 3.8e20
3 W58N27
(718",467") 		W48-W67
(19) 		0.2 -3.7 -3.0e20
4 W35N40
(422",649") 		W27-W39
(12) 		0.2 -0.5 -2.9e19
5 W45N35
(557",580") 		W41-W49
(8) 		0.2 -2.4 -1.5e20
6 W29N33
(385",572") 		W25-W33
(8) 		0.2 -1.1 -4.7e19
7 W04S17
(67",-208") 		E01-W07
(8) 		0.1 -1.6 -1.9e19
8 W33N63
(237",873") 		W29-W39
(10) 		0.0 -1.0 -2.0e19

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 1-May-2023 23:30 UT .