15 May 2017
20170514 Week Rotation Today Rotation Week 20170516

NOAA
0 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 214
(565",-36")
2.0e05
(5.3)
7.5 -6.0 -1.2e34
2 -787
(-549",-269")
1.6e05
(3.8)
5.9 -9.1 -1.5e34
3 -189
(145",835")
3.8e05
(2.7)
6.6 -5.4 -2.0e34
4 -300
(-283",-360")
1.2e03
(0.0)
4.4 -5.2 -6.1e31

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 15-May-2017 23:30 UT .