24 May 2012
⇐20120523 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120525⇒

NOAA
7 Active Regions
11482
11483
11484
11486
11488
11489
11490

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W00S11
(3",-153") 		E11-W11
(22) 		2.3 0.1 4.8e31
2 E42N50
(-409",737") 		E67-E14
(53) 		1.7 0.5 1.1e33
3 E37S63
(-262",-831") 		E53-E14
(39) 		0.7 0.5 6.3e32

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 24-May-2012 21:00 UT .