24 April 2019
⇐20190423 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190425⇒

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 E04S70
(-19",-870") 		E83-W78
(161) 		2.3 -0.7 -2.9e21
2 W01N10
(15",237") 		E16-W17
(33) 		1.7 -0.5 -1.9e20
3 W20S35
(267",-478") 		W11-W29
(18) 		0.6 -1.3 -2.7e20
4 W36S34
(463",-476") 		W29-W41
(12) 		0.5 -1.1 -2.7e20
5 E15S35
(-207",-487") 		E18-E13
(5) 		0.1 1.0 2.7e19
6 E31S19
(-471",-250") 		E33-E30
(3) 		0.1 -1.3 -2.4e19

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 24-Apr-2019 22:00 UT .