12 April 2019
⇐20190411 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190413⇒

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 W31S64
(219",-819") 		E83-W62
(145) 		4.6 -0.9 -5.9e21
2 W13N62
(102",889") 		E44-W35
(79) 		1.4 0.6 2.0e21
3 E12S23
(-187",-283") 		E15-E09
(6) 		0.1 -0.9 -1.6e19

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 12-Apr-2019 22:00 UT .