25 October 2018
⇐20181024 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181026⇒

NOAA
1 Active Region
12725

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 W03N64
(20",827") 		E86-W68
(154) 		4.6 1.0 5.0e21
2 E35S04
(-556",-128") 		E42-E29
(13) 		0.7 -0.9 -2.3e20
3 E44N07
(-663",62") 		E46-E41
(5) 		0.1 -0.8 -2.1e19
4 E29S06
(-460",-177") 		E31-E26
(5) 		0.0 -1.7 -2.4e19
5 W20S06
(325",-173") 		W18-W21
(3) 		0.0 -1.1 -9.8e18
6 E01S33
(-14",-591") 		E02-W01
(3) 		0.0 -0.9 -1.2e19

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-Oct-2018 13:30 UT .