30 January 2017
⇐20170129 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170131⇒

NOAA
2 Active Regions
12628
12629

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 E22S47
(-250",-642") 		E81-W21
(102) 		18.7 -1.4 -1.3e34
2 W22N66
(147",924") 		E20-W34
(54) 		0.6 0.8 1.8e33
3 E28N20
(-430",418") 		E32-E24
(8) 		0.2 -3.5 -2.2e32
4 W30S06
(492",-11") 		W29-W32
(3) 		0.1 -1.2 -2.4e31

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 30-Jan-2017 20:30 UT .