10 May 2019
⇐20190509 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190511⇒

NOAA
2 Active Regions
12740
12741

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 W19S67
(117",-856") 		E64-W72
(136) 		2.4 -1.3 -5.5e21
2 E36N57
(-301",823") 		E59-W05
(64) 		1.9 0.6 2.1e21
3 W19S47
(211",-666") 		W13-W24
(11) 		0.2 -1.3 -1.1e20
4 W33S19
(496",-270") 		W30-W39
(9) 		0.1 -0.8 -2.7e19

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 10-May-2019 22:00 UT .