4 April 2020
⇐20200403 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200405⇒

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 E05S64
(-33",-810") 		E68-W66
(134) 		6.0 -0.9 -5.4e21
2 E21N02
(-341",138") 		E35-W12
(47) 		4.7 -0.2 -3.0e20
3 W12S08
(205",-33") 		W01-W21
(20) 		1.6 -0.2 -6.0e19
4 W18N67
(117",916") 		E19-W49
(68) 		0.6 0.8 2.0e21
5 E38S35
(-487",-476") 		E43-E32
(11) 		0.4 -1.1 -2.3e20
6 E53N00
(-770",71") 		E60-E47
(13) 		0.1 -0.5 -5.1e19
7 W47S18
(664",-229") 		W43-W48
(5) 		0.1 -0.4 -1.9e19
8 E56S07
(-792",-54") 		E60-E53
(7) 		0.1 -1.3 -5.8e19

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-Apr-2020 19:30 UT .