27 June 2017
⇐20170626 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170628⇒

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 -426
(2",-864") 		4.0e05
(2.2) 		5.7 -7.1 -2.8e34
2 -397
(-51",874") 		4.3e05
(2.0) 		6.5 -5.4 -2.3e34
3 299
(401",790") 		1.0e05
(0.4) 		6.9 -5.4 -5.4e33

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 27-Jun-2017 23:30 UT .