27 September 2020
⇐20200926 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200928⇒

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 W25N47
(277",624") 		E49-W38
(87) 		12.4 0.9 2.3e21
2 W01S06
(9",-215") 		E14-W13
(27) 		2.0 -0.2 -7.2e19
3 W13S68
(78",-924") 		E32-W40
(72) 		0.4 -1.1 -2.9e20
4 W54N42
(574",585") 		W45-W67
(22) 		0.2 0.4 2.6e19
5 E41S12
(-620",-283") 		E46-E36
(10) 		0.1 -1.3 -3.0e19
6 W03S18
(50",-402") 		E01-W05
(6) 		0.1 -1.3 -1.7e19
7 W64N62
(400",820") 		W64-W66
(2) 		0.1 1.2 4.3e19
8 W41N08
(621",43") 		W39-W43
(4) 		0.0 -2.3 -2.0e19

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 27-Sep-2020 23:30 UT .