29 May 2012
20120528 Week Rotation Today Rotation Week 20120530

NOAA
5 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W27N47
(295",706")
E07-W49
(56)
3.9 0.7 2.3e33
2 E58N08
(-798",132")
E74-E45
(29)
1.0 -1.7 -1.7e33
3 W21N06
(338",116")
W16-W25
(9)
0.3 -1.5 -1.0e32

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-May-2012 23:00 UT .