22 June 2015
20150621 Week Rotation Today Rotation Week 20150623

NOAA
4 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E26N45
(-298",650")
E60-W30
(90)
4.7 1.8 5.2e33
2 W26S11
(413",-209")
W20-W32
(12)
0.6 3.6 6.1e32
3 W34N06
(524",71")
W30-W38
(8)
0.5 8.5 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 22-Jun-2015 23:35 UT .