20 July 2017
⇐20170719 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170721⇒

NOAA
0 Active Regions

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 -391
(96",625") 		7.2e05
(15.5) 		7.5 -6.0 -4.3e34
2 -400
(-284",-199") 		3.5e04
(1.5) 		6.1 -5.7 -2.0e33

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 20-Jul-2017 23:30 UT .