20 January 2018
⇐20180119 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180121⇒

NOAA
1 Active Region
12696

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 W35N06
(552",165") 		W07-W61
(54) 		4.4 -1.6 -2.6e33
2 E22S10
(-360",-98") 		E33-E10
(23) 		1.8 -0.0 -8.3e30
3 E51S54
(-449",-753") 		E65-E48
(17) 		1.4 -0.8 -1.7e33
4 E19S36
(-258",-502") 		E30-E02
(28) 		1.1 -1.8 -7.3e32
5 W16S76
(65",-925") 		E75-W74
(149) 		0.9 -1.1 -3.1e33
6 W09S24
(141",-324") 		W01-W14
(13) 		0.6 -1.5 -2.3e32

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 20-Jan-2018 20:30 UT .