9 September 2019
⇐20190908 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190910⇒

NOAA
1 Active Region
12748

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 W16S12
(262",-309") 		E20-W35
(55) 		7.6 0.1 1.5e20
2 E06N67
(-42",823") 		E44-W60
(104) 		4.3 1.3 1.7e21
3 W30N21
(444",241") 		W17-W41
(24) 		1.5 0.0 7.9e18
4 W12S65
(81",-905") 		E06-W28
(34) 		0.3 -0.8 -1.1e20
5 E44S33
(-555",-589") 		E51-E36
(15) 		0.2 -0.6 -2.9e19
6 E34N19
(-502",208") 		E38-E30
(8) 		0.1 -0.6 -1.5e19
7 E27S28
(-385",-543") 		E29-E25
(4) 		0.1 -1.2 -1.5e19
8 E36S49
(-367",-775") 		E37-E33
(4) 		0.0 -0.8 -1.1e19

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 9-Sep-2019 23:40 UT .