23 December 2012
⇐20121222 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20121224⇒

NOAA
3 Active Regions
11633
11634
11635

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E06N04
(-107",108") 		E15-W10
(25) 		1.9 -3.7 -1.3e33
2 E32S50
(-335",-729") 		E39-E18
(21) 		0.4 -2.1 -7.4e32
3 W26S48
(287",-703") 		W24-W28
(4) 		0.1 -2.1 -1.2e32
4 E40S29
(-544",-454") 		E44-E35
(9) 		0.1 -3.3 -9.3e31

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 23-Dec-2012 22:00 UT .