13 August 2017
⇐20170812 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170814⇒

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 E38N42
(-430",567") 		E64-W08
(72) 		10.0 2.4 1.5e34
2 W32S64
(217",-888") 		W32-W51
(19) 		0.2 -0.9 -7.6e32
3 W16S71
(88",-923") 		E04-W27
(31) 		0.1 -0.7 -7.2e32
4 W53S03
(754",-120") 		W49-W56
(7) 		0.1 -0.6 -3.2e31

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 13-Aug-2017 23:30 UT .