30 May 2012
⇐20120529 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120531⇒

NOAA
4 Active Regions
11486
11488
11490
11492

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W22N47
(238",706") 		E37-W52
(89) 		4.8 0.6 2.0e33
2 E55N09
(-768",153") 		E72-E40
(32) 		1.6 -1.6 -2.3e33

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 30-May-2012 23:00 UT .