23 May 2012
⇐20120522 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120524⇒

NOAA
7 Active Regions
11479
11482
11483
11484
11486
11488
11489

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E15S12
(-242",-163") 		E25-E03
(22) 		2.3 0.0 1.3e31
2 E45S60
(-336",-812") 		E55-E26
(29) 		0.6 0.4 5.9e32
3 E54N50
(-493",737") 		E71-E41
(30) 		0.5 0.5 5.5e32
4 W49S10
(702",-148") 		W44-W53
(9) 		0.3 -2.6 -4.7e32
5 E30S15
(-463",-223") 		E35-E26
(9) 		0.2 13.5 8.4e32
6 W26N26
(381",438") 		W23-W31
(8) 		0.1 -6.6 -2.7e32

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 23-May-2012 23:00 UT .