22 June 2017
⇐20170621 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170623⇒

NOAA
3 Active Regions
12662
12663
12664

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 -536
(-20",631") 		6.7e05
(14.6) 		6.3 -5.8 -3.9e34
2 -403
(-226",-834") 		3.1e05
(1.7) 		5.6 -6.5 -2.0e34
3 -751
(-673",-159") 		3.5e04
(0.6) 		7.0 -6.2 -2.1e33

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 22-Jun-2017 23:30 UT .