28 June 2017
⇐20170627 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170629⇒

NOAA
1 Active Region
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 -408
(-142",873") 		4.4e05
(1.8) 		6.7 -5.4 -2.4e34
2 -430
(-126",-875") 		4.0e05
(1.6) 		5.5 -6.4 -2.5e34
3 -47
(-27",482") 		0.0
(-1.2) 		-6.0 41.9

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 28-Jun-2017 23:30 UT .