13 January 2018
⇐20180112 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180114⇒

NOAA
2 Active Regions
12694
12695

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 W28N59
(236",871") 		E31-W56
(87) 		2.5 0.7 3.7e33
2 E50N12
(-726",256") 		E64-E34
(30) 		1.3 -2.2 -2.1e33
3 W51N16
(732",316") 		W32-W66
(34) 		0.7 0.5 2.7e32
4 E44S68
(-258",-881") 		E67-E34
(33) 		0.6 -0.7 -1.1e33
5 W55S72
(249",-911") 		W15-W81
(66) 		0.5 -1.1 -2.6e33

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 13-Jan-2018 20:30 UT .