15 August 2021
⇐20210814 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210816⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E31S19
(-467",-397") 		E48-E12
(36) 		2.7 -0.2 -1.1e20
2 W03S07
(46",-222") 		E15-W17
(32) 		2.4 0.3 9.9e19
3 W52N70
(256",862") 		E36-W78
(114) 		1.7 1.0 8.5e20
4 E18N28
(-259",352") 		E25-E11
(14) 		0.3 -2.4 -1.4e20
5 W03N25
(42",293") 		E00-W05
(5) 		0.1 -1.7 -2.8e19
6 E29S67
(-176",-905") 		E35-E19
(16) 		0.1 -0.2 -1.2e19
7 W14S03
(223",-154") 		W12-W15
(3) 		0.0 -1.5 -9.9e18
8 W22S04
(358",-166") 		W20-W24
(4) 		0.0 -1.4 -8.7e18

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 15-Aug-2021 23:30 UT .