31 May 2014
⇐20140530 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140601⇒

NOAA
5 Active Regions
12073
12075
12076
12077
12071

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E43S53
(-384",-754") 		E77-E17
(60) 		2.0 -0.5 -1.3e33
2 E08S10
(-127",-145") 		E13-E02
(11) 		0.7 -2.2 -2.8e32

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-May-2014 23:35 UT .