18 June 2017
⇐20170617 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170619⇒

NOAA
2 Active Regions
12662
12663

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 -679
(-411",595") 		2.3e05
(3.6) 		7.6 -5.6 -1.3e34
2 352
(554",-448") 		5.9e04
(0.9) 		5.9 -7.1 -4.2e33
3 -340
(-272",-877") 		8.1e04
(0.1) 		5.2 -6.2 -5.0e33
4 215
(250",-873") 		2.8e04
(0.1) 		4.8 -9.4 -2.6e33

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-Jun-2017 23:30 UT .