10 April 2017
⇐20170409 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170411⇒

NOAA
2 Active Regions
12650
12648

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 W34S68
(201",-853") 		E80-W83
(163) 		2.7 -1.4 -6.9e33
2 E25N61
(-197",879") 		E44-W46
(90) 		2.0 0.8 4.2e33
3 E27N27
(-396",507") 		E36-E19
(17) 		0.6 0.8 2.0e32
4 W44N27
(597",499") 		W39-W49
(10) 		0.5 0.8 3.1e32
5 E57S76
(-201",-909") 		E70-E79
(-9) 		0.1 -1.7 -1.1e33
6 E31N10
(-481",247") 		E34-E26
(8) 		0.1 -1.7 -4.4e31
7 W19N20
(299",420") 		W17-W22
(5) 		0.1 -1.5 -2.9e31

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 10-Apr-2017 19:30 UT .