12 August 2017
⇐20170811 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170813⇒

NOAA
1 Active Region
12670

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 E42N41
(-481",555") 		E68-E06
(62) 		6.5 2.9 1.3e34
2 W08S65
(52",-900") 		E36-W42
(78) 		0.8 -0.8 -1.9e33
3 W48S23
(644",-435") 		W36-W56
(20) 		0.5 -0.9 -3.7e32
4 W36S05
(556",-164") 		W30-W42
(12) 		0.4 -0.6 -9.6e31

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 12-Aug-2017 23:30 UT .