20 May 2018
⇐20180519 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180521⇒

NOAA
1 Active Region
12709

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 W12N50
(127",750") 		E51-W37
(88) 		5.8 0.8 3.4e33
2 E24S69
(-140",-873") 		E78-W62
(140) 		1.9 -1.1 -4.9e33

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 20-May-2018 15:51 UT .