3 April 2012
⇐20120402 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120404⇒

NOAA
5 Active Regions
11445
11449
11450
11452
11453

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E30S68
(-174",-853") 		E65-W01
(66) 		1.7 0.7 2.1e33
2 W30N36
(388",639") 		W21-W40
(19) 		0.9 1.5 9.7e32
3 E09S45
(-108",-604") 		E14-E02
(12) 		0.6 1.6 4.0e32
4 W06S28
(84",-355") 		W04-W08
(4) 		0.1 14.8 2.4e32

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 3-Apr-2012 23:00 UT .