30 May 2015
⇐20150529 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150531⇒

NOAA
3 Active Regions
12356
12357
12355

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W18N56
(166",797") 		E42-W40
(82) 		4.4 0.3 1.5e33
2 E14S69
(-82",-881") 		E65-W50
(115) 		1.2 -1.1 -3.0e33
3 W13N14
(202",245") 		W09-W17
(8) 		0.4 -4.0 -3.3e32
4 W50N31
(625",497") 		W44-W55
(11) 		0.2 2.8 4.2e32

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 30-May-2015 23:35 UT .