1 October 2017
⇐20170930 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171002⇒

NOAA
3 Active Regions
12681
12682
12683

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 E16S22
(-250",-456") 		E29-E01
(28) 		3.5 -1.6 -1.8e33
2 W19N71
(102",866") 		E84-W56
(140) 		2.7 0.8 3.7e33
3 E24S67
(-154",-915") 		E45-E02
(43) 		0.4 -1.1 -1.9e33
4 W10N04
(163",-37") 		W07-W12
(5) 		0.2 -4.5 -1.6e32
5 W05S05
(76",-189") 		E00-W08
(8) 		0.1 -2.9 -7.1e31

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 1-Oct-2017 23:30 UT .