12 September 2018
⇐20180911 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180913⇒

NOAA
2 Active Regions
12722
12721

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 W16N59
(135",750") 		E92-W37
(129) 		7.8 0.9 5.5e21
2 E32S18
(-485",-390") 		E56-E09
(47) 		5.5 -1.0 -2.4e21
3 W21S02
(339",-147") 		W11-W30
(19) 		2.1 -0.3 -1.7e20
4 W58S05
(804",-147") 		W49-W66
(17) 		0.5 1.7 8.8e20
5 W57N20
(752",268") 		W50-W64
(14) 		0.3 1.8 4.4e20

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 12-Sep-2018 23:10 UT .