12 January 2018
⇐20180111 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180113⇒

NOAA
2 Active Regions
12695
12694

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 W17N60
(145",876") 		106
(4.9e05) 		0.7 6.2 3.0e34
2 W36N16
(558",327") 		W21-W54
(33) 		1.8 0.8 6.6e32
3 W52S69
(273",-894") 		E00-W78
(78) 		1.1 -0.9 -3.5e33
4 E46S65
(-297",-861") 		E57-E42
(15) 		0.4 -0.7 -6.6e32
5 E61N12
(-832",237") 		E70-E50
(20) 		0.4 -1.1 -5.1e32
6 E32S05
(-520",-21") 		E37-E28
(9) 		0.2 -3.5 -2.2e32
7 W45S17
(664",-240") 		W43-W48
(5) 		0.1 -1.0 -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 12-Jan-2018 20:30 UT .