2 December 2017
⇐20171201 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171203⇒

NOAA
1 Active Region
12689

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 W01N48
(7",721") 		E71-W28
(99) 		9.6 1.1 5.9e33
2 E15S23
(-227",-391") 		E26-E02
(24) 		1.9 0.1 5.5e31
3 W51S68
(288",-904") 		W18-W66
(48) 		0.4 -1.2 -3.4e33
4 E30S72
(-151",-930") 		E55-W12
(67) 		0.4 -1.3 -2.3e33
5 W18S12
(298",-214") 		W16-W21
(5) 		0.1 -1.1 -2.8e31
6 W21N13
(336",208") 		W18-W23
(5) 		0.1 -1.2 -1.6e31
7 W03S10
(51",-175") 		W01-W05
(4) 		0.0 -1.2 -8.8e30

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 2-Dec-2017 20:30 UT .