27 May 2014
⇐20140526 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140528⇒

NOAA
7 Active Regions
12065
12071
12072
12073
12074
12075
12069

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W52N41
(558",634") 		W39-W69
(30) 		0.6 0.4 3.6e32
2 E40N39
(-471",614") 		E50-E35
(15) 		0.2 -2.4 -4.9e32
3 E33N03
(-514",73") 		E35-E30
(5) 		0.1 7.9 2.1e32
4 W21N16
(324",281") 		W19-W22
(3) 		0.0 -2.9 -3.0e31

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 27-May-2014 23:35 UT .