20 January 2017
⇐20170119 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170121⇒

NOAA
2 Active Regions
12625
12626

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 W34S24
(502",-335") 		E02-W56
(58) 		3.8 1.4 2.2e33
2 E30N51
(-313",798") 		E45-E12
(33) 		1.4 0.4 7.1e32

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 20-Jan-2017 20:30 UT .