15 December 2016
⇐20161214 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20161216⇒

NOAA
2 Active Regions
12617
12618

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 E33N33
(-453",540") 		E55-E03
(52) 		4.8 1.3 3.4e33
2 E21N69
(-126",918") 		E53-W42
(95) 		0.9 0.8 2.0e33
3 E56S09
(-801",-151") 		E71-E43
(28) 		0.8 0.5 4.0e32
4 W38N04
(597",84") 		W30-W44
(14) 		0.4 0.7 1.3e32
5 W24S12
(393",-192") 		W19-W30
(11) 		0.3 4.5 4.2e32
6 W09S77
(36",-945") 		23
(3.5e04) 		-0.4 5.5 1.9e33
7 W55S71
(258",-919") 		W52-W62
(10) 		0.1 -2.5 -1.1e33
8 W38S76
(148",-942") 		W41-W56
(15) 		0.0 -2.2 -5.9e32

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 15-Dec-2016 20:30 UT .