25 April 2016
⇐20160424 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160426⇒

NOAA
4 Active Regions
12532
12533
12534
12535

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W45N42
(496",682") 		W22-W55
(33) 		2.7 0.8 2.9e33
2 E40N19
(-588",360") 		E52-E27
(25) 		1.4 -3.8 -2.8e33
3 E33S20
(-490",-263") 		E41-E24
(17) 		0.9 -2.0 -6.5e32
4 E13N64
(-94",886") 		E31-W17
(48) 		0.8 0.5 9.2e32
5 W49S18
(683",-242") 		W46-W52
(6) 		0.0 4.9 1.3e32

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 25-Apr-2016 23:44 UT .