7 May 2015
20150506 Week Rotation Today Rotation Week 20150508

NOAA
6 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E33S33
(-433",-472")
E54-E17
(37)
2.5 -3.1 -3.6e33
2 E32S69
(-183",-867")
E69-W74
(143)
2.4 -1.0 -5.2e33
3 W28N56
(247",817")
W02-W59
(57)
2.1 0.5 1.5e33

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 7-May-2015 23:35 UT .