9 February 2017
⇐20170208 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170210⇒

NOAA
2 Active Regions
12630
12634

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 E25N41
(-308",712") 		E51-W17
(68) 		5.5 0.7 3.0e33
2 W26S68
(159",-861") 		E58-W66
(124) 		3.5 -1.3 -7.1e33
3 W54N00
(783",66") 		W44-W67
(23) 		0.7 0.8 4.3e32
4 W20N14
(321",336") 		W15-W25
(10) 		0.3 2.2 2.1e32
5 W46S20
(657",-252") 		W39-W49
(10) 		0.3 1.5 2.8e32

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 9-Feb-2017 20:30 UT .