11 September 2023
⇐20230910 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230912⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W29S23
(423",-462") 		W16-W42
(26) 		1.1 -12.4 -2.7e21
2 E02N04
(-38",-49") 		E07-W07
(14) 		0.8 -5.2 -6.7e20
3 W19N39
(238",510") 		W10-W29
(19) 		0.4 5.5 4.2e20
4 E22N76
(-86",891") 		E20-W02
(22) 		0.4 0.4 5.7e19
5 W12N65
(87",807") 		E05-W18
(23) 		0.3 -0.3 -3.4e19
6 W27N35
(356",452") 		W23-W30
(7) 		0.1 7.1 1.6e20
7 W27S47
(300",-764") 		W24-W33
(9) 		0.1 1.9 3.6e19
8 W18S33
(244",-606") 		W16-W20
(4) 		0.0 -13.2 -1.0e20

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 11-Sep-2023 23:30 UT .