4 July 2019
⇐20190703 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190705⇒

NOAA
0 Active Regions

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 E24N25
(-355",358") 		E43-W00
(43) 		3.1 1.2 6.5e20
2 E33N66
(-214",840") 		E55-W60
(115) 		2.6 0.8 8.0e20
3 W06S05
(105",-142") 		W01-W09
(8) 		0.3 2.2 1.1e20
4 W42S04
(631",-111") 		W37-W47
(10) 		0.2 -1.7 -7.2e19
5 E18S23
(-267",-417") 		E22-E15
(7) 		0.1 -0.7 -1.6e19

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 4-Jul-2019 23:30 UT .