30 April 2015
⇐20150429 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150501⇒

NOAA
2 Active Regions
12327
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 E01N45
(-9",723") 		E49-W26
(75) 		6.5 1.6 6.7e33
2 E28N02
(-454",94") 		E36-E15
(21) 		1.3 -2.9 -1.1e33
3 E60S65
(-349",-846") 		E83-E16
(67) 		0.8 -0.9 -2.8e33
4 W35S08
(544",-82") 		W26-W42
(16) 		0.6 4.4 9.5e32
5 W34N15
(512",312") 		W27-W41
(14) 		0.4 13.4 2.0e33

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-Apr-2015 23:35 UT .