16 April 2019
⇐20190415 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190417⇒

NOAA
1 Active Region
12738

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 W13N60
(108",869") 		E51-W60
(111) 		2.4 0.8 3.5e21
2 E03S72
(-16",-874") 		E76-W66
(142) 		2.0 -0.8 -2.8e21
3 E38S27
(-527",-366") 		E49-E26
(23) 		0.7 -0.6 -2.1e20
4 E39S05
(-605",-18") 		E42-E36
(6) 		0.1 -0.8 -2.9e19
5 E06N41
(-71",694") 		E09-E02
(7) 		0.1 -0.9 -2.9e19

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 16-Apr-2019 22:00 UT .