19 July 2017
⇐20170718 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170720⇒

NOAA
1 Active Region
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 -431
(-109",604") 		7.3e05
(16.7) 		7.3 -5.5 -4.0e34
2 -640
(-448",-279") 		7.3e04
(2.1) 		6.3 -5.7 -4.2e33
3 -496
(-470",109") 		1.4e03
(0.0) 		4.2 -7.1 -9.7e31

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-Jul-2017 23:30 UT .