18 July 2017
⇐20170717 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170719⇒

NOAA
2 Active Regions
12665
12666

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 -611
(-279",453") 		4.3e05
(12.4) 		7.7 -5.5 -2.4e34
2 -496
(-256",817") 		5.3e05
(3.2) 		6.0 -5.9 -3.1e34
3 -747
(-686",-198") 		3.0e04
(0.5) 		6.6 -6.5 -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 18-Jul-2017 23:30 UT .