3 April 2019
⇐20190402 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190404⇒

NOAA
1 Active Region
12737

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 W27S24
(397",-301") 		E17-W43
(60) 		10.8 -0.4 -1.4e21
2 -478
(-840",W00S67") 		122
(5.0e05) 		-1.2 5.3 2.7e22
3 E44S48
(-447",-660") 		E50-E39
(11) 		0.1 -1.4 -1.3e20
4 W03S07
(49",-5") 		4
(1.3e03) 		-1.1 2.8 3.7e19
5 W31N21
(457",436") 		W28-W34
(6) 		0.1 -0.9 -3.1e19
6 W40S09
(612",-60") 		W37-W43
(6) 		0.1 -0.5 -1.3e19

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 3-Apr-2019 19:30 UT .