4 May 2015
⇐20150503 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150505⇒

NOAA
6 Active Regions
12335
12336
12337
12338
12333
12334

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E26S71
(-137",-880") 		E76-W76
(152) 		1.9 -1.0 -4.4e33
2 W03N60
(21",853") 		E46-W42
(88) 		1.8 0.4 1.2e33
3 W25S03
(404",13") 		W22-W29
(7) 		0.2 -4.6 -1.9e32
4 E23N42
(-279",682") 		E25-E22
(3) 		0.0 2.2 6.0e31

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 4-May-2015 23:35 UT .