29 January 2017
⇐20170128 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170130⇒

NOAA
3 Active Regions
12628
12629
12627

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 E30S46
(-342",-641") 		E70-W59
(129) 		17.4 -1.4 -1.4e34
2 W29N63
(219",901") 		E16-W50
(66) 		1.4 0.4 1.6e33
3 E43N20
(-620",402") 		E45-E40
(5) 		0.0 -1.9 -5.2e31

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 29-Jan-2017 20:30 UT .