30 January 2016
⇐20160129 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160131⇒

NOAA
3 Active Regions
12488
12489
12490

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W21N47
(240",772") 		E57-W60
(117) 		8.6 1.0 7.5e33
2 W35S73
(163",-904") 		E70-W79
(149) 		1.3 -1.8 -6.0e33
3 E16S08
(-265",-39") 		E22-E12
(10) 		0.6 5.3 6.5e32
4 W43S34
(551",-477") 		W41-W46
(5) 		0.1 -3.7 -2.4e32
5 W38N01
(603",101") 		W35-W41
(6) 		0.1 -0.5 -1.5e31
6 W34S03
(547",33") 		W32-W36
(4) 		0.0 -1.2 -2.1e31

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 30-Jan-2016 21:30 UT .