19 September 2015
⇐20150918 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150920⇒

NOAA
3 Active Regions
12415
12418
12419

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 W57N31
(686",439") 		W35-W80
(45) 		2.2 1.5 3.4e33
2 E40N12
(-600",102") 		E53-E30
(23) 		1.3 -6.2 -3.4e33
3 W50N63
(334",809") 		W36-W91
(55) 		0.7 0.5 7.2e32
4 W34S05
(533",-182") 		W29-W39
(10) 		0.5 2.9 5.1e32
5 W44N11
(655",99") 		W39-W51
(12) 		0.4 0.8 1.7e32
6 E51S31
(-636",-557") 		E61-E44
(17) 		0.4 -1.4 -6.5e32

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-Sep-2015 18:30 UT .