21 June 2012
⇐20120620 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120622⇒

NOAA
2 Active Regions
11504
11510

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E54N45
(-542",652") 		E70-E29
(41) 		1.6 1.0 2.4e33
2 E15S21
(-227",-361") 		E21-E06
(15) 		0.4 12.5 1.3e33
3 E34S22
(-486",-376") 		E37-E30
(7) 		0.1 -2.0 -1.0e32
4 W23N16
(357",234") 		W21-W25
(4) 		0.1 4.4 7.3e31

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 21-Jun-2012 23:00 UT .