29 January 2012
⇐20120128 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120130⇒

NOAA
5 Active Regions
11408
11410
11411
11412
11413

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W42S59
(333",-799") 		E57-W65
(122) 		5.3 0.9 6.5e33
2 W19N41
(247",701") 		W06-W40
(34) 		2.3 1.3 1.9e33
3 E30N11
(-483",265") 		E36-E23
(13) 		0.3 -16.0 -1.9e33

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 29-Jan-2012 22:00 UT .