19 August 2018
⇐20180818 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180820⇒

NOAA
1 Active Region
12718

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 W20S27
(288",-528") 		E24-W44
(68) 		11.9 -0.6 -2.8e21
2 E54N59
(-394",775") 		E52-E35
(17) 		1.1 1.0 2.0e21
3 E28N35
(-368",463") 		E37-E19
(18) 		0.6 0.9 2.2e20
4 E28S68
(-168",-910") 		E52-W06
(58) 		0.4 -0.4 -9.7e20
5 W29S60
(226",-867") 		W11-W43
(32) 		0.4 -0.5 -4.9e20
6 W38S48
(388",-760") 		W31-W44
(13) 		0.1 -1.8 -3.5e20

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 19-Aug-2018 23:10 UT .