9 May 2012
⇐20120508 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120510⇒

NOAA
5 Active Regions
11470
11471
11474
11476
11477

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W31N21
(460",388") 		W06-W49
(43) 		6.0 -4.5 -1.1e34
2 E17S18
(-262",-243") 		E25-E08
(17) 		1.8 -0.7 -3.2e32
3 W31S22
(460",-321") 		W27-W37
(10) 		0.6 -1.3 -3.1e32
4 E11S43
(-132",-612") 		E15-E05
(10) 		0.2 -1.9 -1.6e32
5 W14S41
(174",-588") 		W12-W17
(5) 		0.1 -2.5 -8.1e31
6 W12N10
(191",217") 		W09-W14
(5) 		0.1 -7.5 -1.1e32

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 9-May-2012 23:00 UT .