1 January 2017
⇐20161231 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170102⇒

NOAA
1 Active Region
12622

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 E31S39
(-387",-585") 		E42-W38
(80) 		15.6 -1.4 -1.2e34
2 W21N63
(161",888") 		E39-W43
(82) 		2.0 0.9 3.8e33
3 W06S11
(102",-138") 		W01-W10
(9) 		0.5 -2.4 -2.3e32

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 1-Jan-2017 20:30 UT .