27 February 2012
⇐20120226 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120228⇒

NOAA
5 Active Regions
11422
11423
11424
11425
11426

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W25S61
(200",-788") 		E60-W56
(116) 		5.2 0.8 4.1e33
2 E37S25
(-532",-325") 		E42-E30
(12) 		0.7 -1.9 -5.3e32
3 E07N14
(-116",352") 		E11-E01
(10) 		0.5 -20.1 -2.3e33
4 E22N32
(-309",601") 		E25-E19
(6) 		0.1 -4.0 -2.0e32

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 27-Feb-2012 22:00 UT .