9 April 2020
⇐20200408 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200410⇒

NOAA
1 Active Region
12759

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 W27S17
(414",-190") 		W06-W39
(33) 		4.1 -0.5 -5.5e20
2 W11S68
(70",-844") 		E78-W73
(151) 		4.0 -0.9 -4.5e21
3 E13S09
(-221",-59") 		E28-W15
(43) 		3.1 -0.1 -5.4e19
4 W00N54
(2",829") 		E49-W49
(98) 		2.4 0.6 1.6e21
5 W37S40
(436",-557") 		W34-W39
(5) 		0.2 -1.3 -1.5e20

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 9-Apr-2020 19:30 UT .