31 May 2012
⇐20120530 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120601⇒

NOAA
7 Active Regions
11486
11488
11490
11492
11493
11494
11495

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W31N47
(329",702") 		E16-W66
(82) 		5.5 0.6 2.6e33
2 E45N15
(-645",253") 		E60-E24
(36) 		3.8 -2.6 -5.7e33
3 E41S22
(-575",-353") 		E45-E37
(8) 		0.2 -1.3 -1.5e32

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 31-May-2012 23:00 UT .