1 May 2015
⇐20150430 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150502⇒

NOAA
3 Active Regions
12334
12335
12333

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W20N47
(224",736") 		E48-W38
(86) 		5.0 1.4 5.7e33
2 E53S66
(-307",-852") 		E77-E02
(75) 		1.3 -1.0 -3.8e33
3 E18N01
(-296",79") 		E25-E08
(17) 		1.2 -2.9 -8.0e32
4 W49S06
(718",-57") 		W46-W53
(7) 		0.2 4.7 5.1e32
5 W44N12
(652",244") 		W41-W48
(7) 		0.1 6.8 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 1-May-2015 23:35 UT .