25 December 2012
⇐20121224 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20121226⇒

NOAA
4 Active Regions
11633
11634
11635
11636

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W26N03
(423",86") 		W15-W37
(22) 		2.0 -1.7 -9.5e32
2 E42N49
(-428",755") 		E51-E07
(44) 		1.4 0.3 5.9e32
3 E07S48
(-81",-705") 		E16-W15
(31) 		1.0 -2.5 -1.4e33
4 E03S23
(-45",-341") 		E07-W04
(11) 		0.3 -6.0 -3.7e32
5 W52S46
(534",-687") 		W45-W57
(12) 		0.1 -1.6 -1.6e32

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 25-Dec-2012 22:00 UT .