17 September 2024
⇐20240916 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240918⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W12N31
(170",394") 		E02-W18
(20) 		0.4 5.1 3.4e20
2 W12N42
(151",551") 		W06-W19
(13) 		0.2 -2.1 -8.2e19
3 E12N34
(-158",439") 		E16-E07
(9) 		0.2 8.6 2.8e20
4 E05N04
(-80",-50") 		E06-E03
(3) 		0.1 -1.6 -1.9e19
5 W26N50
(267",654") 		W21-W28
(7) 		0.1 -0.5 -7.4e18
6 E04S25
(-55",-505") 		E06-W01
(7) 		0.1 -18.9 -2.1e20
7 E32S60
(-252",-874") 		E38-E27
(11) 		0.0 -0.5 -9.7e18

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-Sep-2024 23:30 UT .