16 April 2015
⇐20150415 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150417⇒

NOAA
5 Active Regions
12321
12322
12323
12324
12325

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W23S66
(148",-836") 		E83-W85
(168) 		3.5 -1.0 -4.7e33
2 E30S21
(-451",-262") 		E40-E16
(24) 		1.9 5.7 3.6e33
3 W53S36
(623",-510") 		W37-W60
(23) 		1.8 -2.9 -5.1e33
4 E12S18
(-193",-202") 		E15-E10
(5) 		0.1 4.7 1.0e32
5 E16S41
(-205",-557") 		E18-E14
(4) 		0.0 4.2 8.1e31

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 16-Apr-2015 23:35 UT .