29 September 2020
⇐20200928 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200930⇒

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 W47N54
(414",724") 		E30-W58
(88) 		5.0 0.8 1.4e21
2 E13S13
(-210",-324") 		E23-W08
(31) 		2.3 -0.1 -4.0e19
3 E22S50
(-234",-796") 		E30-E13
(17) 		0.4 -0.5 -6.0e19
4 E28S10
(-447",-267") 		E32-E24
(8) 		0.3 -0.8 -4.3e19
5 W06N09
(105",30") 		W02-W10
(8) 		0.2 -1.1 -2.9e19
6 W19S08
(304",-232") 		W14-W22
(8) 		0.2 0.9 2.2e19
7 W20S69
(117",-926") 		W04-W38
(34) 		0.1 -0.9 -8.5e19
8 E56S54
(-469",-805") 		E58-E52
(6) 		0.1 -1.5 -7.1e19
9 E37S48
(-386",-771") 		E44-E31
(13) 		0.0 -1.7 -2.9e19

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 29-Sep-2020 23:30 UT .