25 December 2017
⇐20171224 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171226⇒

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 W02S50
(21",-729") 		E68-W33
(101) 		5.4 -1.4 -4.7e33
2 E29S21
(-442",-313") 		E38-E12
(26) 		1.7 -0.0 -1.5e31
3 E55N32
(-674",538") 		E71-E45
(26) 		0.9 1.3 1.5e33
4 W56N07
(804",138") 		W44-W70
(26) 		0.8 -1.4 -1.1e33
5 W37S05
(589",-51") 		W29-W43
(14) 		0.6 -1.1 -2.4e32
6 E30N13
(-473",252") 		E34-E24
(10) 		0.4 0.7 1.0e32
7 E48N59
(-375",849") 		E68-E34
(34) 		0.1 -0.2 -8.3e31
8 E21S36
(-279",-552") 		E24-E17
(7) 		0.1 -0.7 -2.5e31
9 E14S37
(-192",-554") 		E17-E12
(5) 		0.1 -0.7 -1.4e31
10 E19S27
(-279",-408") 		E20-E16
(4) 		0.0 -0.8 -1.1e31

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 25-Dec-2017 20:30 UT .