31 December 2015
20151230 Week Rotation Today Rotation Week 20160101

NOAA
3 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E07N43
(-91",698")
E69-W59
(128)
16.6 1.1 9.9e33
2 E52S15
(-742",-224")
E65-E31
(34)
1.7 4.8 6.1e33
3 W10S72
(51",-910")
E67-W68
(135)
1.4 -1.0 -3.5e33

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 31-Dec-2015 21:35 UT .