16 December 2011
⇐20111215 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20111217⇒

NOAA
4 Active Regions
11374
11375
11377
11378

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E09N06
(-157",121") 		E13-E04
(9) 		0.8 -1.3 -1.8e32

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 16-Dec-2011 23:47 UT .