13 April 2012
⇐20120412 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120414⇒

NOAA
4 Active Regions
11454
11455
11456
11457

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W46N07
(684",180") 		W36-W56
(20) 		2.1 -3.3 -4.0e33
2 W51S37
(592",-525") 		W42-W57
(15) 		0.3 -1.0 -2.9e32
3 W02S25
(31",-319") 		W00-W04
(4) 		0.1 -6.5 -1.7e32
4 W49N38
(569",632") 		W44-W51
(7) 		0.1 -2.8 -2.9e32
5 W01S10
(14",-70") 		E02-W02
(4) 		0.0 -1.0 -7.1e30

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 13-Apr-2012 23:00 UT .