31 August 2022
⇐20220830 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220901⇒

NOAA
4 Active Regions
13086
13089
13087
13090

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E22N16
(-347",156") 		E47-W00
(47) 		6.0 2.3 2.3e21
2 W15N42
(178",550") 		E15-W34
(49) 		3.5 0.7 4.4e20
3 E36N68
(-207",839") 		E62-W81
(143) 		2.7 0.8 7.7e20
4 W36S59
(291",-857") 		W21-W55
(34) 		0.6 -0.3 -9.4e19
5 E16S33
(-217",-611") 		E27-E06
(21) 		0.3 5.9 4.1e20
6 W39N59
(305",763") 		W36-W53
(17) 		0.1 -0.9 -2.8e19
7 E48N28
(-628",370") 		E51-E45
(6) 		0.1 1.9 4.6e19
8 W55S50
(496",-769") 		W50-W61
(11) 		0.1 -0.9 -2.9e19
9 W62S46
(582",-717") 		W61-W64
(3) 		0.0 -1.3 -3.9e19

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-2022 23:30 UT .