30 July 2017
⇐20170729 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170731⇒

NOAA
2 Active Regions
12669
12668

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 -628
(-285",683") 		7.1e05
(10.1) 		7.2 -5.5 -3.9e34
2 249
(451",-296") 		1.0e05
(2.9) 		6.1 -7.3 -7.4e33
3 -185
(117",-905") 		2.5e05
(0.5) 		5.2 -6.6 -1.6e34
4 598
(616",-129") 		1.8e03
(0.0) 		5.4 -6.9 -1.2e32

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 30-Jul-2017 23:30 UT .