25 September 2020
⇐20200924 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200926⇒

NOAA
1 Active Region
12773

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 W07N45
(84",586") 		E24-W48
(72) 		21.8 0.6 2.7e21
2 W11S45
(124",-753") 		W01-W18
(17) 		0.6 -0.9 -1.3e20
3 W52N24
(688",316") 		W45-W60
(15) 		0.4 0.4 3.5e19
4 W13S67
(87",-917") 		E06-W20
(26) 		0.3 -0.7 -1.3e20
5 W26N36
(337",472") 		W22-W31
(9) 		0.2 -0.9 -2.9e19
6 W24S13
(385",-321") 		W21-W27
(6) 		0.1 -1.6 -2.5e19

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 25-Sep-2020 23:30 UT .