19 January 2013
⇐20130118 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130120⇒

NOAA
4 Active Regions
11654
11658
11659
11660

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E53S45
(-548",-655") 		E59-E34
(25) 		1.3 -2.3 -3.8e33
2 E05S06
(-87",-18") 		E07-E03
(4) 		0.2 -2.5 -6.8e31
3 W04N50
(43",795") 		W01-W06
(5) 		0.0 -0.7 -3.0e31
4 E03S44
(-31",-619") 		E04-W01
(5) 		0.0 -2.4 -3.8e31
5 E24S48
(-270",-669") 		E27-E21
(6) 		0.0 -12.2 -2.5e32

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 19-Jan-2013 22:00 UT .