23 December 2016
⇐20161222 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20161224⇒

NOAA
2 Active Regions
12620
12619

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 W35S20
(529",-303") 		E02-W56
(58) 		6.3 1.4 3.6e33
2 E10N59
(-85",858") 		E73-W30
(103) 		3.5 0.6 2.6e33
3 W41N42
(474",670") 		W22-W63
(41) 		1.8 0.3 6.1e32
4 E09S27
(-129",-415") 		E12-E04
(8) 		0.1 2.5 3.8e31
5 W37N63
(273",878") 		W34-W45
(11) 		0.0 2.0 2.1e32

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 23-Dec-2016 20:30 UT .