12 May 2012
⇐20120511 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120513⇒

NOAA
5 Active Regions
11476
11477
11478
11479
11480

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E12N40
(-157",647") 		E31-W00
(31) 		1.2 2.8 1.7e33
2 W28S22
(412",-317") 		W24-W33
(9) 		0.4 -1.5 -2.0e32
3 W36S43
(411",-614") 		W31-W44
(13) 		0.2 -3.5 -3.9e32

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-May-2012 23:00 UT .