17 January 2018
⇐20180116 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180118⇒

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 E04N13
(-72",301") 		E28-W18
(46) 		3.5 -3.0 -2.3e33
2 E10S72
(-55",-897") 		E79-W76
(155) 		1.7 -1.4 -4.6e33
3 W21N05
(351",163") 		W17-W25
(8) 		0.1 -3.2 -1.1e32

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 17-Jan-2018 20:30 UT .