24 December 2017
⇐20171223 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171225⇒

NOAA
1 Active Region
12692

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 E12S47
(-139",-693") 		E62-W19
(81) 		5.1 -1.5 -4.1e33
2 W39N08
(606",161") 		W18-W56
(38) 		2.3 -2.1 -2.1e33
3 W21S17
(334",-247") 		W18-W24
(6) 		0.1 -1.5 -2.4e31

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 24-Dec-2017 20:30 UT .