12 April 2015
⇐20150411 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150413⇒

NOAA
5 Active Regions
12318
12320
12321
12322
12323

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E18S55
(-170",-726") 		E76-W86
(162) 		7.9 -1.9 -1.0e34
2 W00N32
(1",584") 		E13-W11
(24) 		0.6 1.6 3.6e32
3 W04N46
(48",753") 		W02-W06
(4) 		0.1 -3.2 -1.7e32
4 E12N34
(-169",619") 		E13-E11
(2) 		0.0 -1.6 -2.8e31

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 12-Apr-2015 23:35 UT .