23 January 2017
20170122 Week Rotation Today Rotation Week 20170124

NOAA
4 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E23S11
(-380",-103")
E38-E02
(36)
3.6 1.1 9.9e32
2 W60S27
(749",-402")
W47-W79
(32)
0.8 1.3 1.2e33
3 W21N59
(183",875")
W11-W44
(33)
0.4 0.4 3.2e32
4 W08N67
(55",928")
E12-W35
(47)
0.3 0.3 3.5e32
5 E58S76
(-199",-931")
E81-E55
(26)
0.1 -0.9 -4.3e32

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 23-Jan-2017 20:30 UT .