26 September 2020
⇐20200925 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200927⇒

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 W16N45
(186",595") 		E88-W37
(125) 		18.2 0.7 2.6e21
2 E15S06
(-252",-209") 		E25-E02
(23) 		1.5 0.0 1.8e18
3 W40N45
(442",605") 		W31-W48
(17) 		0.5 0.5 6.6e19
4 E20S66
(-130",-913") 		E39-E07
(32) 		0.2 -0.9 -1.2e20
5 W23S64
(163",-903") 		W08-W31
(23) 		0.2 -0.4 -4.7e19
6 W40S12
(606",-287") 		W36-W45
(9) 		0.2 -1.0 -3.4e19
7 W26S15
(411",-349") 		W24-W29
(5) 		0.1 -2.2 -3.8e19
8 W31N12
(483",107") 		W29-W33
(4) 		0.0 -1.4 -1.1e19
9 W21S44
(247",-736") 		W19-W22
(3) 		0.0 -1.5 -1.4e19

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 26-Sep-2020 23:30 UT .