31 August 2024
⇐20240830 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240901⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E42N28
(-570",361") 		E55-E31
(24) 		0.7 5.3 8.0e20
2 W33S07
(510",-217") 		W21-W42
(21) 		0.6 -4.9 -4.9e20
3 E23S40
(-292",-688") 		E31-E13
(18) 		0.5 -2.4 -2.9e20
4 W39N66
(246",822") 		W11-W54
(43) 		0.3 -0.9 -1.0e20
5 E17S60
(-139",-873") 		E26-W00
(26) 		0.2 0.8 5.1e19
6 W40S40
(468",-677") 		W36-W45
(9) 		0.1 2.2 5.0e19
7 W03N57
(31",723") 		E01-W07
(8) 		0.0 -0.4 -4.7e18
8 E05S17
(-73",-392") 		E06-E03
(3) 		0.0 -18.5 -1.3e20

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 31-Aug-2024 23:30 UT .