27 November 2017
⇐20171126 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171128⇒

NOAA
1 Active Region
12689

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 W14S47
(160",-732") 		E65-W33
(98) 		6.0 -1.4 -5.7e33
2 E58N29
(-726",459") 		E74-E46
(28) 		0.7 1.7 1.5e33
3 W48N10
(715",152") 		W45-W52
(7) 		0.2 -2.5 -2.9e32

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-Nov-2017 20:30 UT .